Dermatology

The FP suspected that this was a skin cancer with ulceration and pigmentation. The differential diagnosis included pigmented basal cell carcinoma, melanoma, and squamous cell carcinoma. If this were a melanoma, there would appear to be areas of regression between the islands of pigmentation. The FP explained that a biopsy was needed and suggested a broad shave biopsy because this technique would provide adequate tissue to the pathologist. (See the Watch & Learn video on “Shave biopsy.”)

The FP performed the broad shave biopsy and saw some remaining pigment at the base of the initial cut. He performed a second pass with the DermaBlade and explained this in the pathology requisition. (It is acceptable to send a deeper section of tissue if it appears that there is some remaining tumor below the initial biopsy.)

The biopsy report revealed lentigo maligna melanoma, which was approximately 2 mm thick—much deeper than the clinical appearance suggested. The pathologist combined the depths from the 2 specimens to get an approximate Breslow level. In this case, the most important information was that this was >1 mm in depth, which suggested that a sentinel lymph node biopsy would be needed for prognostic information. The patient was referred to Surgical Oncology for wide excision and sentinel lymph node biopsy.

Fortunately, the nodes were negative for metastasis. The wide excision was closed with a graft that healed well over time. The patient was followed with regular skin exams and careful lymph node exams of the neck and supraclavicular areas. He now wears a hat whenever he is outdoors.

‌

Photo courtesy of Jonathan Karnes, MD and text for Photo Rounds Friday courtesy of Richard P. Usatine, MD. This case was adapted from: Karnes J, Usatine R. Squamous cell carcinoma. In: Usatine R, Smith M, Mayeaux EJ, et al. Color Atlas and Synopsis of Family Medicine. 3rd ed. New York, NY: McGraw-Hill; 2019:1103-1111.

To learn more about the newest 3rd edition of the Color Atlas and Synopsis of Family Medicine, see: https://www.amazon.com/Color-Atlas-Synopsis-Family-Medicine/dp/1259862046/

You can get the Color Atlas of Family Medicine app by clicking on this link: usatinemedia.com

The FP suspected that this was a skin cancer with ulceration and pigmentation. The differential diagnosis included pigmented basal cell carcinoma, melanoma, and squamous cell carcinoma. If this were a melanoma, there would appear to be areas of regression between the islands of pigmentation. The FP explained that a biopsy was needed and suggested a broad shave biopsy because this technique would provide adequate tissue to the pathologist. (See the Watch & Learn video on “Shave biopsy.”)

The FP performed the broad shave biopsy and saw some remaining pigment at the base of the initial cut. He performed a second pass with the DermaBlade and explained this in the pathology requisition. (It is acceptable to send a deeper section of tissue if it appears that there is some remaining tumor below the initial biopsy.)

The biopsy report revealed lentigo maligna melanoma, which was approximately 2 mm thick—much deeper than the clinical appearance suggested. The pathologist combined the depths from the 2 specimens to get an approximate Breslow level. In this case, the most important information was that this was >1 mm in depth, which suggested that a sentinel lymph node biopsy would be needed for prognostic information. The patient was referred to Surgical Oncology for wide excision and sentinel lymph node biopsy.

Fortunately, the nodes were negative for metastasis. The wide excision was closed with a graft that healed well over time. The patient was followed with regular skin exams and careful lymph node exams of the neck and supraclavicular areas. He now wears a hat whenever he is outdoors.

‌

Photo courtesy of Jonathan Karnes, MD and text for Photo Rounds Friday courtesy of Richard P. Usatine, MD. This case was adapted from: Karnes J, Usatine R. Squamous cell carcinoma. In: Usatine R, Smith M, Mayeaux EJ, et al. Color Atlas and Synopsis of Family Medicine. 3rd ed. New York, NY: McGraw-Hill; 2019:1103-1111.

To learn more about the newest 3rd edition of the Color Atlas and Synopsis of Family Medicine, see: https://www.amazon.com/Color-Atlas-Synopsis-Family-Medicine/dp/1259862046/

You can get the Color Atlas of Family Medicine app by clicking on this link: usatinemedia.com

The FP suspected that this was a skin cancer with ulceration and pigmentation. The differential diagnosis included pigmented basal cell carcinoma, melanoma, and squamous cell carcinoma. If this were a melanoma, there would appear to be areas of regression between the islands of pigmentation. The FP explained that a biopsy was needed and suggested a broad shave biopsy because this technique would provide adequate tissue to the pathologist. (See the Watch & Learn video on “Shave biopsy.”)

The FP performed the broad shave biopsy and saw some remaining pigment at the base of the initial cut. He performed a second pass with the DermaBlade and explained this in the pathology requisition. (It is acceptable to send a deeper section of tissue if it appears that there is some remaining tumor below the initial biopsy.)

The biopsy report revealed lentigo maligna melanoma, which was approximately 2 mm thick—much deeper than the clinical appearance suggested. The pathologist combined the depths from the 2 specimens to get an approximate Breslow level. In this case, the most important information was that this was >1 mm in depth, which suggested that a sentinel lymph node biopsy would be needed for prognostic information. The patient was referred to Surgical Oncology for wide excision and sentinel lymph node biopsy.

Fortunately, the nodes were negative for metastasis. The wide excision was closed with a graft that healed well over time. The patient was followed with regular skin exams and careful lymph node exams of the neck and supraclavicular areas. He now wears a hat whenever he is outdoors.

‌

Photo courtesy of Jonathan Karnes, MD and text for Photo Rounds Friday courtesy of Richard P. Usatine, MD. This case was adapted from: Karnes J, Usatine R. Squamous cell carcinoma. In: Usatine R, Smith M, Mayeaux EJ, et al. Color Atlas and Synopsis of Family Medicine. 3rd ed. New York, NY: McGraw-Hill; 2019:1103-1111.

To learn more about the newest 3rd edition of the Color Atlas and Synopsis of Family Medicine, see: https://www.amazon.com/Color-Atlas-Synopsis-Family-Medicine/dp/1259862046/

You can get the Color Atlas of Family Medicine app by clicking on this link: usatinemedia.com

Comorbid dermatologic conditions appear to be common in children with lichen nitidus, as is generalized disease, according to Selcen Kundak, MD, and Yasemin Çakır, MD, of Dr. Behcet Uz Children’s Research and Training Hospital in Izmir, Turkey.

In a retrospective study 10-year study of 17 children with biopsy-confirmed lichen nitidus (LN) who were diagnosed with the disease at a single tertiary care health center between January 2007 and March 2017, the mean age of onset was 9 years and 15 of 17 (88%) were male. The mean skin lesion duration period was 13 months (range 1-48 months).

The generalized form of LN was common in the study population, occurring in 7 of 17 (41%) patients, 2 of whom had severe pruritus. Comorbid skin conditions also occurred in seven (41%) patients; these conditions included lichen planus in one patient, lichen striatus in one patient, nail psoriasis in one patients, and cutaneous features of atopic skin in four patients. In addition, 11 of 17 (65%) patients had multinucleated giant cells.

“Seven of 17 had comorbid skin conditions. Lichen planus, lichen striatus, psoriasis, and atopy are also chronic inflammatory skin conditions, and possibly, there are common triggers for these and LN; however, this is speculative, not proven,” the investigators concluded in Pediatric Dermatology.

Mild to moderate corticosteroids were give to 16 patients; all showed some clinical improvement within 3 weeks. One patient was treated with systemic corticosteroids.

The study authors reported no relevant financial disclosures.

lfranki@mdedge.com

SOURCE: Kundak S et al. Pediatr Dermatol. 2019 Feb 11. doi: 10.1111/pde.13749.

Comorbid dermatologic conditions appear to be common in children with lichen nitidus, as is generalized disease, according to Selcen Kundak, MD, and Yasemin Çakır, MD, of Dr. Behcet Uz Children’s Research and Training Hospital in Izmir, Turkey.

In a retrospective study 10-year study of 17 children with biopsy-confirmed lichen nitidus (LN) who were diagnosed with the disease at a single tertiary care health center between January 2007 and March 2017, the mean age of onset was 9 years and 15 of 17 (88%) were male. The mean skin lesion duration period was 13 months (range 1-48 months).

The generalized form of LN was common in the study population, occurring in 7 of 17 (41%) patients, 2 of whom had severe pruritus. Comorbid skin conditions also occurred in seven (41%) patients; these conditions included lichen planus in one patient, lichen striatus in one patient, nail psoriasis in one patients, and cutaneous features of atopic skin in four patients. In addition, 11 of 17 (65%) patients had multinucleated giant cells.

“Seven of 17 had comorbid skin conditions. Lichen planus, lichen striatus, psoriasis, and atopy are also chronic inflammatory skin conditions, and possibly, there are common triggers for these and LN; however, this is speculative, not proven,” the investigators concluded in Pediatric Dermatology.

Mild to moderate corticosteroids were give to 16 patients; all showed some clinical improvement within 3 weeks. One patient was treated with systemic corticosteroids.

The study authors reported no relevant financial disclosures.

lfranki@mdedge.com

SOURCE: Kundak S et al. Pediatr Dermatol. 2019 Feb 11. doi: 10.1111/pde.13749.

Comorbid dermatologic conditions appear to be common in children with lichen nitidus, as is generalized disease, according to Selcen Kundak, MD, and Yasemin Çakır, MD, of Dr. Behcet Uz Children’s Research and Training Hospital in Izmir, Turkey.

In a retrospective study 10-year study of 17 children with biopsy-confirmed lichen nitidus (LN) who were diagnosed with the disease at a single tertiary care health center between January 2007 and March 2017, the mean age of onset was 9 years and 15 of 17 (88%) were male. The mean skin lesion duration period was 13 months (range 1-48 months).

The generalized form of LN was common in the study population, occurring in 7 of 17 (41%) patients, 2 of whom had severe pruritus. Comorbid skin conditions also occurred in seven (41%) patients; these conditions included lichen planus in one patient, lichen striatus in one patient, nail psoriasis in one patients, and cutaneous features of atopic skin in four patients. In addition, 11 of 17 (65%) patients had multinucleated giant cells.

“Seven of 17 had comorbid skin conditions. Lichen planus, lichen striatus, psoriasis, and atopy are also chronic inflammatory skin conditions, and possibly, there are common triggers for these and LN; however, this is speculative, not proven,” the investigators concluded in Pediatric Dermatology.

Mild to moderate corticosteroids were give to 16 patients; all showed some clinical improvement within 3 weeks. One patient was treated with systemic corticosteroids.

The study authors reported no relevant financial disclosures.

lfranki@mdedge.com

SOURCE: Kundak S et al. Pediatr Dermatol. 2019 Feb 11. doi: 10.1111/pde.13749.

SAN FRANCISCO – Children diagnosed with atopic dermatitis when they were 1 year old were significantly more likely to have active food allergies and to have those allergies persist throughout childhood to age 18 years, based on findings from a prospective, longitudinal study of 287 Wisconsin children.

Mitchel L. Zoler/MDedge News

The link between atopic dermatitis (AD) and food allergy was especially strong in children who displayed early and recurrent AD; the link was weaker or essentially nonexistent for children with early transient AD or AD that first appeared later in childhood, Anne Marie Singh, MD, said while presenting a poster at the annual meeting of the American Academy of Allergy, Asthma, and Immunology.

The results also showed that even mild AD linked with an increased prevalence of food allergy when it appeared early and persisted, but more severe AD with this onset and recurrence pattern led to an even greater prevalence of food allergy, said Dr. Singh, a pediatric allergist and asthma specialist at the University of Wisconsin–Madison.

“The data suggest that something about early, recurrent AD increases the risk for food allergy throughout childhood,” Dr. Singh said in an interview. The findings suggest that surveillance for food allergies need to be intensified in infants who present with AD by the time they’re 1 year old and that food allergy surveillance should continue as these children age as long as their AD recurs.

The results also hint that these children might potentially benefit from steps aimed at desensitizing the allergy, although this must be proven in a future intervention study, she said.

The results suggest that a food allergy prevention regimen like the one used in the Learning Early About Peanut Allergy (LEAP) trial (New Engl J Med. 2015 Feb 26;372[9]:803-13) to prevent peanut allergy may be appropriate for selected, high-risk children with early AD, but this hypothesis needs testing, Dr. Singh said. She noted that some important differences exist between the patients enrolled in LEAP and the children studied in the current report: In LEAP, all enrolled children had severe eczema, an established egg allergy, or both. The findings reported by Dr. Singh came from children with AD, but only about 30% had moderate or severe eczema, and her analysis did not subdivide the observed food allergies by the type of food that caused a reaction.

She and her associates used data collected in the Childhood Origins of Asthma (COAST) study, begun in 1998, which enrolled 287 infants prior to birth who had at least one parent who was allergic, asthmatic, or both (Pediatr Allergy Immunol. 2002 Dec;13[s15]:38-43). The data showed that 62% of the infants had either no AD or transient AD, 14% had late onset AD, and 24% had early, recurrent AD. Although the data showed a statistically significant link between AD at 1 year old and food allergies throughout childhood, further analysis that broke the population into three different patterns of AD showed that the link with food allergy primarily existed among children with the early, recurrent form. Children with early, recurrent atopic dermatitis had a food allergy prevalence of 12%-27% annually through the age of 18 years.

“The data suggest that immunologic changes early in life are critical to food allergy development and that these changes have long-lasting effects throughout childhood,” Dr. Singh concluded. “The immunologic mechanisms by which early AD affects food allergy development and disease expression require further investigation.”

COAST received no commercial funding. Dr. Singh reported no relevant financial disclosures.

mzoler@mdedge.com

SOURCE: Singh AM et al. J Allergy Clin Immunol. 2019 Feb;143[2]:AB125.

SAN FRANCISCO – Children diagnosed with atopic dermatitis when they were 1 year old were significantly more likely to have active food allergies and to have those allergies persist throughout childhood to age 18 years, based on findings from a prospective, longitudinal study of 287 Wisconsin children.

Mitchel L. Zoler/MDedge News

The link between atopic dermatitis (AD) and food allergy was especially strong in children who displayed early and recurrent AD; the link was weaker or essentially nonexistent for children with early transient AD or AD that first appeared later in childhood, Anne Marie Singh, MD, said while presenting a poster at the annual meeting of the American Academy of Allergy, Asthma, and Immunology.

The results also showed that even mild AD linked with an increased prevalence of food allergy when it appeared early and persisted, but more severe AD with this onset and recurrence pattern led to an even greater prevalence of food allergy, said Dr. Singh, a pediatric allergist and asthma specialist at the University of Wisconsin–Madison.

“The data suggest that something about early, recurrent AD increases the risk for food allergy throughout childhood,” Dr. Singh said in an interview. The findings suggest that surveillance for food allergies need to be intensified in infants who present with AD by the time they’re 1 year old and that food allergy surveillance should continue as these children age as long as their AD recurs.

The results also hint that these children might potentially benefit from steps aimed at desensitizing the allergy, although this must be proven in a future intervention study, she said.

The results suggest that a food allergy prevention regimen like the one used in the Learning Early About Peanut Allergy (LEAP) trial (New Engl J Med. 2015 Feb 26;372[9]:803-13) to prevent peanut allergy may be appropriate for selected, high-risk children with early AD, but this hypothesis needs testing, Dr. Singh said. She noted that some important differences exist between the patients enrolled in LEAP and the children studied in the current report: In LEAP, all enrolled children had severe eczema, an established egg allergy, or both. The findings reported by Dr. Singh came from children with AD, but only about 30% had moderate or severe eczema, and her analysis did not subdivide the observed food allergies by the type of food that caused a reaction.

She and her associates used data collected in the Childhood Origins of Asthma (COAST) study, begun in 1998, which enrolled 287 infants prior to birth who had at least one parent who was allergic, asthmatic, or both (Pediatr Allergy Immunol. 2002 Dec;13[s15]:38-43). The data showed that 62% of the infants had either no AD or transient AD, 14% had late onset AD, and 24% had early, recurrent AD. Although the data showed a statistically significant link between AD at 1 year old and food allergies throughout childhood, further analysis that broke the population into three different patterns of AD showed that the link with food allergy primarily existed among children with the early, recurrent form. Children with early, recurrent atopic dermatitis had a food allergy prevalence of 12%-27% annually through the age of 18 years.

“The data suggest that immunologic changes early in life are critical to food allergy development and that these changes have long-lasting effects throughout childhood,” Dr. Singh concluded. “The immunologic mechanisms by which early AD affects food allergy development and disease expression require further investigation.”

COAST received no commercial funding. Dr. Singh reported no relevant financial disclosures.

mzoler@mdedge.com

SOURCE: Singh AM et al. J Allergy Clin Immunol. 2019 Feb;143[2]:AB125.

SAN FRANCISCO – Children diagnosed with atopic dermatitis when they were 1 year old were significantly more likely to have active food allergies and to have those allergies persist throughout childhood to age 18 years, based on findings from a prospective, longitudinal study of 287 Wisconsin children.

Mitchel L. Zoler/MDedge News

The link between atopic dermatitis (AD) and food allergy was especially strong in children who displayed early and recurrent AD; the link was weaker or essentially nonexistent for children with early transient AD or AD that first appeared later in childhood, Anne Marie Singh, MD, said while presenting a poster at the annual meeting of the American Academy of Allergy, Asthma, and Immunology.

The results also showed that even mild AD linked with an increased prevalence of food allergy when it appeared early and persisted, but more severe AD with this onset and recurrence pattern led to an even greater prevalence of food allergy, said Dr. Singh, a pediatric allergist and asthma specialist at the University of Wisconsin–Madison.

“The data suggest that something about early, recurrent AD increases the risk for food allergy throughout childhood,” Dr. Singh said in an interview. The findings suggest that surveillance for food allergies need to be intensified in infants who present with AD by the time they’re 1 year old and that food allergy surveillance should continue as these children age as long as their AD recurs.

The results also hint that these children might potentially benefit from steps aimed at desensitizing the allergy, although this must be proven in a future intervention study, she said.

The results suggest that a food allergy prevention regimen like the one used in the Learning Early About Peanut Allergy (LEAP) trial (New Engl J Med. 2015 Feb 26;372[9]:803-13) to prevent peanut allergy may be appropriate for selected, high-risk children with early AD, but this hypothesis needs testing, Dr. Singh said. She noted that some important differences exist between the patients enrolled in LEAP and the children studied in the current report: In LEAP, all enrolled children had severe eczema, an established egg allergy, or both. The findings reported by Dr. Singh came from children with AD, but only about 30% had moderate or severe eczema, and her analysis did not subdivide the observed food allergies by the type of food that caused a reaction.

She and her associates used data collected in the Childhood Origins of Asthma (COAST) study, begun in 1998, which enrolled 287 infants prior to birth who had at least one parent who was allergic, asthmatic, or both (Pediatr Allergy Immunol. 2002 Dec;13[s15]:38-43). The data showed that 62% of the infants had either no AD or transient AD, 14% had late onset AD, and 24% had early, recurrent AD. Although the data showed a statistically significant link between AD at 1 year old and food allergies throughout childhood, further analysis that broke the population into three different patterns of AD showed that the link with food allergy primarily existed among children with the early, recurrent form. Children with early, recurrent atopic dermatitis had a food allergy prevalence of 12%-27% annually through the age of 18 years.

“The data suggest that immunologic changes early in life are critical to food allergy development and that these changes have long-lasting effects throughout childhood,” Dr. Singh concluded. “The immunologic mechanisms by which early AD affects food allergy development and disease expression require further investigation.”

COAST received no commercial funding. Dr. Singh reported no relevant financial disclosures.

mzoler@mdedge.com

SOURCE: Singh AM et al. J Allergy Clin Immunol. 2019 Feb;143[2]:AB125.

WASHINGTON – The role of food allergies in atopic dermatitis (AD) is an important issue for both patients and their clinicians and brings up an interesting discussion, Peter Lio, MD, said in a video interview at the annual meeting of the American Academy of Dermatology.

Patients are often convinced that food is the main driver of their AD, or parents believe it is a trigger in their children with AD, according to Dr. Lio of the departments of dermatology and pediatrics at Northwestern University, Chicago.

Vidyard Video

There is an increased risk of true food allergy in patients with AD, which “seems to get worse with increasing severity of the disease,” he pointed out. However, he added, many patients believe that food allergy is what is driving their eczema, “and that’s the part we don’t really think bears out” in clinical trials.

In the interview, Dr. Lio reviewed some of the clinical trial data and discussed other issues, including foods that seem to have an inflammatory effect in the body, the concepts of “transcutaneous sensitization” in children with AD and the “leaky gut,” and why he tends to recommend probiotics for patients with AD.

Dr. Lio spoke on diet and AD during a session titled “Dietary Triggers and Modifications of Common Dermatologic Conditions – An Evidence Based Approach,” at the meeting, He had no relevant disclosures.

emechcatie@mdedge.com

WASHINGTON – The role of food allergies in atopic dermatitis (AD) is an important issue for both patients and their clinicians and brings up an interesting discussion, Peter Lio, MD, said in a video interview at the annual meeting of the American Academy of Dermatology.

Patients are often convinced that food is the main driver of their AD, or parents believe it is a trigger in their children with AD, according to Dr. Lio of the departments of dermatology and pediatrics at Northwestern University, Chicago.

Vidyard Video

There is an increased risk of true food allergy in patients with AD, which “seems to get worse with increasing severity of the disease,” he pointed out. However, he added, many patients believe that food allergy is what is driving their eczema, “and that’s the part we don’t really think bears out” in clinical trials.

In the interview, Dr. Lio reviewed some of the clinical trial data and discussed other issues, including foods that seem to have an inflammatory effect in the body, the concepts of “transcutaneous sensitization” in children with AD and the “leaky gut,” and why he tends to recommend probiotics for patients with AD.

Dr. Lio spoke on diet and AD during a session titled “Dietary Triggers and Modifications of Common Dermatologic Conditions – An Evidence Based Approach,” at the meeting, He had no relevant disclosures.

emechcatie@mdedge.com

WASHINGTON – The role of food allergies in atopic dermatitis (AD) is an important issue for both patients and their clinicians and brings up an interesting discussion, Peter Lio, MD, said in a video interview at the annual meeting of the American Academy of Dermatology.

Patients are often convinced that food is the main driver of their AD, or parents believe it is a trigger in their children with AD, according to Dr. Lio of the departments of dermatology and pediatrics at Northwestern University, Chicago.

Vidyard Video

There is an increased risk of true food allergy in patients with AD, which “seems to get worse with increasing severity of the disease,” he pointed out. However, he added, many patients believe that food allergy is what is driving their eczema, “and that’s the part we don’t really think bears out” in clinical trials.

In the interview, Dr. Lio reviewed some of the clinical trial data and discussed other issues, including foods that seem to have an inflammatory effect in the body, the concepts of “transcutaneous sensitization” in children with AD and the “leaky gut,” and why he tends to recommend probiotics for patients with AD.

Dr. Lio spoke on diet and AD during a session titled “Dietary Triggers and Modifications of Common Dermatologic Conditions – An Evidence Based Approach,” at the meeting, He had no relevant disclosures.

emechcatie@mdedge.com

Poor sleep quality, but not sleep duration, was significantly associated with active atopic dermatitis in a longitudinal study of more than 13,000 children.

The itching associated with atopic dermatitis (AD) may interfere with children’s sleep, and sleep studies suggest that children with active disease are more restless at night, wrote Faustine D. Ramirez of the University of California, San Francisco, and her colleagues. Their report is in JAMA Pediatrics.

“Acute and chronic sleep disturbances have been associated with a wide range of cognitive, mood, and behavioral impairments and have been linked to poor educational performance,” the researchers noted.

To determine the impact of active AD on children’s sleep, the researchers reviewed data from 13,988 children followed for a median of 11 years. Of these, 4,938 children met the definition for AD between age 2 and 16 years.

Overall, children with active AD were approximately 50% more likely to experience poor sleep quality than were those without AD (adjusted odds ratio, 1.48). Sleep quality was even worse for children with severe active AD (aOR, 1.68), and active AD plus asthma or allergic rhinitis (aOR 2.15). Sleep quality was significantly worse in children reporting mild AD (aOR, 1.40) or inactive AD (aOR, 1.41), compared with children without AD. Nighttime sleep duration was similar throughout childhood for children with and without AD.

“In addition to increased nighttime awakenings and difficulty falling asleep, we found that children with active atopic dermatitis were more likely to report nightmares and early morning awakenings, which has not been previously studied,” Ms. Ramirez and her associates said.

Total sleep duration was statistically shorter overall for children with AD, compared with those without AD, but the difference was not clinically significant, they noted.

The participants were from a longitudinal study in the United Kingdom in which pregnant women were recruited between 1990 and 1992. For those with children alive at 1 year, their children were followed for approximately 16 years. Sleep quality was assessed at six time points with four standardized questionnaires between ages 2 and 10 years, and sleep duration was assessed at eight time points between ages 2 and 16 years with standardized questionnaires.

The study findings were limited by several factors, including some missing data and patient attrition, as well as possible misclassification bias because of the use of parent and patient self-reports, and a possible lack of generalizability to other populations, the researchers noted.

However, the results support the need for developing clinical outcome measures to address sleep quality in children with AD, they said. “Additional work should investigate interventions to improve sleep quality and examine the association between atopic dermatitis treatment and children’s sleep.”

The study was funded primarily by a grant from the National Eczema Association. Ms. Ramirez disclosed a grant from the National Institutes of Health. Two other investigators received grants, one from NIH and the other Wellcome Senior Clinical Fellowship in Science. One coauthor reported receiving multiple grants, as well as paid consulting for TARGETPharma, a company developing a prospective atopic dermatitis registry.

SOURCE: Ramirez FD al. JAMA Pediatr. 2019 Mar 4. doi: 10.1001/jamapediatrics.2019.0025.

Poor sleep quality, but not sleep duration, was significantly associated with active atopic dermatitis in a longitudinal study of more than 13,000 children.

The itching associated with atopic dermatitis (AD) may interfere with children’s sleep, and sleep studies suggest that children with active disease are more restless at night, wrote Faustine D. Ramirez of the University of California, San Francisco, and her colleagues. Their report is in JAMA Pediatrics.

“Acute and chronic sleep disturbances have been associated with a wide range of cognitive, mood, and behavioral impairments and have been linked to poor educational performance,” the researchers noted.

To determine the impact of active AD on children’s sleep, the researchers reviewed data from 13,988 children followed for a median of 11 years. Of these, 4,938 children met the definition for AD between age 2 and 16 years.

Overall, children with active AD were approximately 50% more likely to experience poor sleep quality than were those without AD (adjusted odds ratio, 1.48). Sleep quality was even worse for children with severe active AD (aOR, 1.68), and active AD plus asthma or allergic rhinitis (aOR 2.15). Sleep quality was significantly worse in children reporting mild AD (aOR, 1.40) or inactive AD (aOR, 1.41), compared with children without AD. Nighttime sleep duration was similar throughout childhood for children with and without AD.

“In addition to increased nighttime awakenings and difficulty falling asleep, we found that children with active atopic dermatitis were more likely to report nightmares and early morning awakenings, which has not been previously studied,” Ms. Ramirez and her associates said.

Total sleep duration was statistically shorter overall for children with AD, compared with those without AD, but the difference was not clinically significant, they noted.

The participants were from a longitudinal study in the United Kingdom in which pregnant women were recruited between 1990 and 1992. For those with children alive at 1 year, their children were followed for approximately 16 years. Sleep quality was assessed at six time points with four standardized questionnaires between ages 2 and 10 years, and sleep duration was assessed at eight time points between ages 2 and 16 years with standardized questionnaires.

The study findings were limited by several factors, including some missing data and patient attrition, as well as possible misclassification bias because of the use of parent and patient self-reports, and a possible lack of generalizability to other populations, the researchers noted.

However, the results support the need for developing clinical outcome measures to address sleep quality in children with AD, they said. “Additional work should investigate interventions to improve sleep quality and examine the association between atopic dermatitis treatment and children’s sleep.”

The study was funded primarily by a grant from the National Eczema Association. Ms. Ramirez disclosed a grant from the National Institutes of Health. Two other investigators received grants, one from NIH and the other Wellcome Senior Clinical Fellowship in Science. One coauthor reported receiving multiple grants, as well as paid consulting for TARGETPharma, a company developing a prospective atopic dermatitis registry.

SOURCE: Ramirez FD al. JAMA Pediatr. 2019 Mar 4. doi: 10.1001/jamapediatrics.2019.0025.

Poor sleep quality, but not sleep duration, was significantly associated with active atopic dermatitis in a longitudinal study of more than 13,000 children.

The itching associated with atopic dermatitis (AD) may interfere with children’s sleep, and sleep studies suggest that children with active disease are more restless at night, wrote Faustine D. Ramirez of the University of California, San Francisco, and her colleagues. Their report is in JAMA Pediatrics.

“Acute and chronic sleep disturbances have been associated with a wide range of cognitive, mood, and behavioral impairments and have been linked to poor educational performance,” the researchers noted.

To determine the impact of active AD on children’s sleep, the researchers reviewed data from 13,988 children followed for a median of 11 years. Of these, 4,938 children met the definition for AD between age 2 and 16 years.

Overall, children with active AD were approximately 50% more likely to experience poor sleep quality than were those without AD (adjusted odds ratio, 1.48). Sleep quality was even worse for children with severe active AD (aOR, 1.68), and active AD plus asthma or allergic rhinitis (aOR 2.15). Sleep quality was significantly worse in children reporting mild AD (aOR, 1.40) or inactive AD (aOR, 1.41), compared with children without AD. Nighttime sleep duration was similar throughout childhood for children with and without AD.

“In addition to increased nighttime awakenings and difficulty falling asleep, we found that children with active atopic dermatitis were more likely to report nightmares and early morning awakenings, which has not been previously studied,” Ms. Ramirez and her associates said.

Total sleep duration was statistically shorter overall for children with AD, compared with those without AD, but the difference was not clinically significant, they noted.

The participants were from a longitudinal study in the United Kingdom in which pregnant women were recruited between 1990 and 1992. For those with children alive at 1 year, their children were followed for approximately 16 years. Sleep quality was assessed at six time points with four standardized questionnaires between ages 2 and 10 years, and sleep duration was assessed at eight time points between ages 2 and 16 years with standardized questionnaires.

The study findings were limited by several factors, including some missing data and patient attrition, as well as possible misclassification bias because of the use of parent and patient self-reports, and a possible lack of generalizability to other populations, the researchers noted.

However, the results support the need for developing clinical outcome measures to address sleep quality in children with AD, they said. “Additional work should investigate interventions to improve sleep quality and examine the association between atopic dermatitis treatment and children’s sleep.”

The study was funded primarily by a grant from the National Eczema Association. Ms. Ramirez disclosed a grant from the National Institutes of Health. Two other investigators received grants, one from NIH and the other Wellcome Senior Clinical Fellowship in Science. One coauthor reported receiving multiple grants, as well as paid consulting for TARGETPharma, a company developing a prospective atopic dermatitis registry.

SOURCE: Ramirez FD al. JAMA Pediatr. 2019 Mar 4. doi: 10.1001/jamapediatrics.2019.0025.

WASHINGTON – The American Contact Dermatitis Society has selected isobornyl acrylate the contact allergen of the year. It is an acrylic monomer used as an adhesive.

Vidyard Video

Among other applications, isobornyl acrylate is often used in medical devices. The selection was made based in part on multiple case reports of diabetes patients developing contact allergies to their diabetes devices, such as insulin pumps, explained Golara Honari, MD, of Stanford (Calif.) University, who presented the selection at the ACDS annual meeting.

The significance of this allergen is that testing through routine panels does not identify it, so clinician awareness is especially important, Dr. Honari noted in a video interview at the meeting.

Most of the reported contact allergen cases have been in patients with diabetes, but clinicians should think about other possible sources, such as acrylic nails, she said. As for treatment, clinicians and patients can consider alternative diabetes devices without isobornyl acrylate, she said.

In the future, close collaboration between clinicians and the medical device industry to develop appropriate labeling can help increase awareness of the potential for allergic reactions, she added.

Dr. Honari had no relevant financial conflicts to disclose.

WASHINGTON – The American Contact Dermatitis Society has selected isobornyl acrylate the contact allergen of the year. It is an acrylic monomer used as an adhesive.

Vidyard Video

Among other applications, isobornyl acrylate is often used in medical devices. The selection was made based in part on multiple case reports of diabetes patients developing contact allergies to their diabetes devices, such as insulin pumps, explained Golara Honari, MD, of Stanford (Calif.) University, who presented the selection at the ACDS annual meeting.

The significance of this allergen is that testing through routine panels does not identify it, so clinician awareness is especially important, Dr. Honari noted in a video interview at the meeting.

Most of the reported contact allergen cases have been in patients with diabetes, but clinicians should think about other possible sources, such as acrylic nails, she said. As for treatment, clinicians and patients can consider alternative diabetes devices without isobornyl acrylate, she said.

In the future, close collaboration between clinicians and the medical device industry to develop appropriate labeling can help increase awareness of the potential for allergic reactions, she added.

Dr. Honari had no relevant financial conflicts to disclose.

WASHINGTON – The American Contact Dermatitis Society has selected isobornyl acrylate the contact allergen of the year. It is an acrylic monomer used as an adhesive.

Vidyard Video

Among other applications, isobornyl acrylate is often used in medical devices. The selection was made based in part on multiple case reports of diabetes patients developing contact allergies to their diabetes devices, such as insulin pumps, explained Golara Honari, MD, of Stanford (Calif.) University, who presented the selection at the ACDS annual meeting.

The significance of this allergen is that testing through routine panels does not identify it, so clinician awareness is especially important, Dr. Honari noted in a video interview at the meeting.

Most of the reported contact allergen cases have been in patients with diabetes, but clinicians should think about other possible sources, such as acrylic nails, she said. As for treatment, clinicians and patients can consider alternative diabetes devices without isobornyl acrylate, she said.

In the future, close collaboration between clinicians and the medical device industry to develop appropriate labeling can help increase awareness of the potential for allergic reactions, she added.

Dr. Honari had no relevant financial conflicts to disclose.

Psoriasis is a chronic skin condition affecting approximately 2% to 3% of the population.^1,2 Beyond cutaneous manifestations, psoriasis is a systemic inflammatory state that is associated with an increased risk for cardiovascular disease, including obesity,^3,4 type 2 diabetes mellitus,^5,6 hypertension,⁵ dyslipidemia,^3,7 metabolic syndrome,⁷ atherosclerosis,⁸ peripheral vascular disease,⁹ coronary artery calcification,¹⁰ myocardial infarction,^11-13 stroke,^9,14 and cardiac death.^15,16

Psoriasis also has been associated with inflammatory bowel disease (IBD), possibly because of similar autoimmune mechanisms in the pathogenesis of both diseases.^17,18 However, there is no literature regarding the risk for acute gastrointestinal pathologies such as appendicitis, cholecystitis, or diverticulitis in patients with psoriasis.

The primary objective of this study was to examine if patients with psoriasis are at increased risk for appendicitis, cholecystitis, or diverticulitis compared to the general population. The secondary objective was to determine if patients with severe psoriasis (ie, patients treated with phototherapy or systemic therapy) are at a higher risk for these conditions compared to patients with mild psoriasis.

Methods

Patients and Tools
A descriptive, population-based cohort study design with controls from a matched cohort was used to ascertain the effect of psoriasis status on patients’ risk for appendicitis, cholecystitis, or diverticulitis. Our cohort was selected using administrative data from Kaiser Permanente Southern California (KPSC) during the study period (January 1, 2004, through December 31, 2016).

Kaiser Permanente Southern California is a large integrated health maintenance organization that includes approximately 4 million patients as of December 31, 2016, and includes roughly 20% of the region’s population. The geographic area served extends from Bakersfield in the lower California Central Valley to San Diego on the border with Mexico. Membership demographics, socioeconomic status, and ethnicity composition are representative of California.

Patients were included if they had a diagnosis of psoriasis (International Classification of Diseases, Ninth Revision, Clinical Modification [ICD-9-CM] code 696.1; International Classification of Diseases, Tenth Revision, Clinical Modification [ICD-10-CM] codes L40.0, L40.4, L40.8, or L40.9) for at least 3 visits between January 1, 2004, and December 31, 2016. Patients were not excluded if they also had a diagnosis of psoriatic arthritis (ICD-9-CM code 696.0; ICD-10-CM code L40.5x). Patients also must have been continuously enrolled for at least 1 year before and 1 year after the index date, which was defined as the date of the third psoriasis diagnosis.

Each patient with psoriasis was assigned to 1 of 2 cohorts: (1) severe psoriasis: patients who received UVB phototherapy, psoralen plus UVA phototherapy, methotrexate, acitretin, cyclosporine, apremilast, etanercept, adalimumab, infliximab, ustekinumab, efalizumab, alefacept, secukinumab, or ixekizumab during the study period; and (2) mild psoriasis: patients who had a diagnosis of psoriasis who did not receive one of these therapies during the study period.

Patients were excluded if they had a history of appendicitis, cholecystitis, or diverticulitis at any time before the index date. Only patients older than 18 years were included.

Patients with psoriasis were frequency matched (1:5) with healthy patients, also from the KPSC network. Individuals were matched by age, sex, and ethnicity.

Statistical Analysis
Baseline characteristics were described with means and SD for continuous variables as well as percentages for categorical variables. Chi-square tests for categorical variables and the Mann-Whitney U Test for continuous variables were used to compare the patients’ characteristics by psoriasis status. Cox proportional hazards regression models were used to examine the risk for appendicitis, cholecystitis, or diverticulitis among patients with and without psoriasis and among patients with mild and severe psoriasis. Proportionality assumption was validated using Pearson product moment correlation between the scaled Schoenfeld residuals and log transformed time for each covariate.

Results were presented as crude (unadjusted) hazard ratios (HRs) and adjusted HRs, where confounding factors (ie, age, sex, ethnicity, body mass index [BMI], alcohol use, smoking status, income, education, and membership length) were adjusted. All tests were performed with SAS EG 5.1 and R software. P<.05 was considered statistically significant. Results are reported with the 95% confidence interval (CI), when appropriate.

Results

A total of 1,690,214 KPSC patients were eligible for the study; 10,307 (0.6%) met diagnostic and inclusion criteria for the psoriasis cohort. Patients with psoriasis had a significantly higher mean BMI (29.9 vs 28.7; P<.0001) as well as higher mean rates of alcohol use (56% vs 53%; P<.0001) and smoking (47% vs 38%; P<.01) compared to controls. Psoriasis patients had a shorter average duration of membership within the Kaiser network (P=.0001) compared to controls.

A total of 7416 patients met criteria for mild psoriasis and 2891 patients met criteria for severe psoriasis (eTable). Patients with severe psoriasis were significantly younger and had significantly higher mean BMI compared to patients with mild psoriasis (P<.0001 and P=.0001, respectively). No significant difference in rates of alcohol or tobacco use was detected among patients with mild and severe psoriasis.

Diverticulitis
Patients with psoriasis had a significantly greater prevalence of diverticulitis compared to the control cohort (5.1% vs 4.2%; P<.0001). There was no difference in prevalence between the severe psoriasis group and the mild psoriasis group (P=.96), but the time to diagnosis of diverticulitis was shorter in the severe psoriasis group than in the mild psoriasis group (7.2 years vs 7.9 years; P<.0001). Psoriasis patients had an incidence rate of diverticulitis of 6.61 per 1000 patient-years compared to 5.38 per 1000 patient-years in the control group. Psoriasis conferred a higher risk for diverticulitis in both the crude and adjusted models (HR, 1.23; 95% CI, 1.11-1.35 [P<.001] and HR, 1.16; 95% CI, 1.05-1.29; [P<.01], respectively)(Table 3); however, when stratified by disease severity, only patients with severe psoriasis were found to be at higher risk (HR, 1.26; 95% CI, 1.15-1.61; P<.001 for the adjusted model).

Comment

The objective of this study was to examine the background risks for specific gastrointestinal pathologies in a large cohort of patients with psoriasis compared to the general population. After adjusting for measured confounders, patients with severe psoriasis had a significantly higher risk of diverticulitis compared to the general population. Although more patients with severe psoriasis developed appendicitis or cholecystitis, the difference was not significant.

The pathogenesis of diverticulosis and diverticulitis has been thought to be related to increased intracolonic pressure and decreased dietary fiber intake, leading to formation of diverticula in the colon.¹⁹ Our study did not correct for differences in diet between the 2 groups, making it a possible confounding variable. Studies evaluating dietary habits of psoriatic patients have found that adult males with psoriasis might consume less fiber compared to healthy patients,²⁰ and psoriasis patients also might consume less whole-grain fiber.²¹ Furthermore, fiber deficiency also might affect gut flora, causing low-grade chronic inflammation,¹⁸ which also has been supported by response to anti-inflammatory medications such as mesalazine.²² Given the autoimmune association between psoriasis and IBD, it is possible that psoriasis also might create an environment of chronic inflammation in the gut, predisposing patients with psoriasis to diverticulitis. However, further research is needed to better evaluate this possibility.

Our study also does not address any potential effects on outcomes of specific treatments for psoriasis. Brandl et al²³ found that patients on immunosuppressive therapy for autoimmune diseases had longer hospital and intensive care unit stays, higher rates of emergency operations, and higher mortality while hospitalized. Because our results suggest that patients with severe psoriasis, who are therefore more likely to require treatment with an immunomodulator, are at higher risk for diverticulitis, these patients also might be at risk for poorer outcomes.

There is no literature evaluating the relationship between psoriasis and appendicitis. Our study found a slightly lower incidence rate compared to the national trend (9.38 per 10,000 patient-years in the United States in 2008) in both healthy patients and psoriasis patients.²⁴ Of note, this statistic includes children, whereas our study did not, which might in part account for the lower rate. However, Cheluvappa et al²⁵ hypothesized a relationship between appendicitis and subsequent appendectomy at a young age and protection against IBD. They also found that the mechanism for protection involves downregulation of the helper T cell (T_H17) pathway,²⁵ which also has been found to play a role in psoriasis pathogenesis.^26,27 Although our results suggest that the risk for appendicitis is not increased for patients with psoriasis, further research might be able to determine if appendicitis and subsequent appendectomy also can offer protection against development of psoriasis.

We found that patients with severe psoriasis had a higher incidence rate of cholecystitis compared to patients with mild psoriasis. Egeberg et al²⁸ found an increased risk for cholelithiasis among patients with psoriasis, which may contribute to a higher rate of cholecystitis. Although both acute and chronic cholecystitis were incorporated in this study, a Russian study found that chronic cholecystitis may be a predictor of progression of psoriasis.²⁹ Moreover, patients with severe psoriasis had a shorter duration to diagnosis of cholecystitis than patients with mild psoriasis. It is possible that patients with severe psoriasis are in a state of greater chronic inflammation than those with mild psoriasis, and therefore, when combined with other risk factors for cholecystitis, may progress to disease more quickly. Alternatively, this finding could be treatment related, as there have been reported cases of cholecystitis related to etanercept use in patients treated for psoriasis and juvenile polyarticular rheumatoid arthritis.^30,31 The relationship is not yet well defined, however, and further research is necessary to evaluate this association.

Study Strengths
Key strengths of this study include the large sample size and diversity of the patient population. Kaiser Permanente Southern California membership generally is representative of the broader community, making our results fairly generalizable to populations with health insurance. Use of a matched control cohort allows the results to be more specific to the disease of interest, and the population-based design minimizes bias.

Study Limitations
This study has several limitations. Although the cohorts were categorized based on type of treatment received, exact therapies were not specified. As a retrospective study, it is difficult to control for potential confounding variables that are not included in the electronic medical record. The results of this study also demonstrated significantly shorter durations to diagnosis of all 3 conditions, indicating that surveillance bias may be present.

Conclusion

Patients with psoriasis may be at an increased risk for diverticulitis compared to patients without psoriasis, which could be due to the chronic inflammatory state induced by psoriasis. Therefore, it may be beneficial for clinicians to evaluate psoriasis patients for other risk factors for diverticulitis and subsequently provide counseling to these patients to minimize their risk for diverticulitis. Psoriasis patients do not appear to be at an increased risk for appendicitis or cholecystitis compared to controls; however, further research is needed for confirmation.

Psoriasis is a chronic skin condition affecting approximately 2% to 3% of the population.^1,2 Beyond cutaneous manifestations, psoriasis is a systemic inflammatory state that is associated with an increased risk for cardiovascular disease, including obesity,^3,4 type 2 diabetes mellitus,^5,6 hypertension,⁵ dyslipidemia,^3,7 metabolic syndrome,⁷ atherosclerosis,⁸ peripheral vascular disease,⁹ coronary artery calcification,¹⁰ myocardial infarction,^11-13 stroke,^9,14 and cardiac death.^15,16

Psoriasis also has been associated with inflammatory bowel disease (IBD), possibly because of similar autoimmune mechanisms in the pathogenesis of both diseases.^17,18 However, there is no literature regarding the risk for acute gastrointestinal pathologies such as appendicitis, cholecystitis, or diverticulitis in patients with psoriasis.

The primary objective of this study was to examine if patients with psoriasis are at increased risk for appendicitis, cholecystitis, or diverticulitis compared to the general population. The secondary objective was to determine if patients with severe psoriasis (ie, patients treated with phototherapy or systemic therapy) are at a higher risk for these conditions compared to patients with mild psoriasis.

Methods

Patients and Tools
A descriptive, population-based cohort study design with controls from a matched cohort was used to ascertain the effect of psoriasis status on patients’ risk for appendicitis, cholecystitis, or diverticulitis. Our cohort was selected using administrative data from Kaiser Permanente Southern California (KPSC) during the study period (January 1, 2004, through December 31, 2016).

Kaiser Permanente Southern California is a large integrated health maintenance organization that includes approximately 4 million patients as of December 31, 2016, and includes roughly 20% of the region’s population. The geographic area served extends from Bakersfield in the lower California Central Valley to San Diego on the border with Mexico. Membership demographics, socioeconomic status, and ethnicity composition are representative of California.

Patients were included if they had a diagnosis of psoriasis (International Classification of Diseases, Ninth Revision, Clinical Modification [ICD-9-CM] code 696.1; International Classification of Diseases, Tenth Revision, Clinical Modification [ICD-10-CM] codes L40.0, L40.4, L40.8, or L40.9) for at least 3 visits between January 1, 2004, and December 31, 2016. Patients were not excluded if they also had a diagnosis of psoriatic arthritis (ICD-9-CM code 696.0; ICD-10-CM code L40.5x). Patients also must have been continuously enrolled for at least 1 year before and 1 year after the index date, which was defined as the date of the third psoriasis diagnosis.

Each patient with psoriasis was assigned to 1 of 2 cohorts: (1) severe psoriasis: patients who received UVB phototherapy, psoralen plus UVA phototherapy, methotrexate, acitretin, cyclosporine, apremilast, etanercept, adalimumab, infliximab, ustekinumab, efalizumab, alefacept, secukinumab, or ixekizumab during the study period; and (2) mild psoriasis: patients who had a diagnosis of psoriasis who did not receive one of these therapies during the study period.

Patients were excluded if they had a history of appendicitis, cholecystitis, or diverticulitis at any time before the index date. Only patients older than 18 years were included.

Patients with psoriasis were frequency matched (1:5) with healthy patients, also from the KPSC network. Individuals were matched by age, sex, and ethnicity.

Statistical Analysis
Baseline characteristics were described with means and SD for continuous variables as well as percentages for categorical variables. Chi-square tests for categorical variables and the Mann-Whitney U Test for continuous variables were used to compare the patients’ characteristics by psoriasis status. Cox proportional hazards regression models were used to examine the risk for appendicitis, cholecystitis, or diverticulitis among patients with and without psoriasis and among patients with mild and severe psoriasis. Proportionality assumption was validated using Pearson product moment correlation between the scaled Schoenfeld residuals and log transformed time for each covariate.

Results were presented as crude (unadjusted) hazard ratios (HRs) and adjusted HRs, where confounding factors (ie, age, sex, ethnicity, body mass index [BMI], alcohol use, smoking status, income, education, and membership length) were adjusted. All tests were performed with SAS EG 5.1 and R software. P<.05 was considered statistically significant. Results are reported with the 95% confidence interval (CI), when appropriate.

Results

A total of 1,690,214 KPSC patients were eligible for the study; 10,307 (0.6%) met diagnostic and inclusion criteria for the psoriasis cohort. Patients with psoriasis had a significantly higher mean BMI (29.9 vs 28.7; P<.0001) as well as higher mean rates of alcohol use (56% vs 53%; P<.0001) and smoking (47% vs 38%; P<.01) compared to controls. Psoriasis patients had a shorter average duration of membership within the Kaiser network (P=.0001) compared to controls.

A total of 7416 patients met criteria for mild psoriasis and 2891 patients met criteria for severe psoriasis (eTable). Patients with severe psoriasis were significantly younger and had significantly higher mean BMI compared to patients with mild psoriasis (P<.0001 and P=.0001, respectively). No significant difference in rates of alcohol or tobacco use was detected among patients with mild and severe psoriasis.

Diverticulitis
Patients with psoriasis had a significantly greater prevalence of diverticulitis compared to the control cohort (5.1% vs 4.2%; P<.0001). There was no difference in prevalence between the severe psoriasis group and the mild psoriasis group (P=.96), but the time to diagnosis of diverticulitis was shorter in the severe psoriasis group than in the mild psoriasis group (7.2 years vs 7.9 years; P<.0001). Psoriasis patients had an incidence rate of diverticulitis of 6.61 per 1000 patient-years compared to 5.38 per 1000 patient-years in the control group. Psoriasis conferred a higher risk for diverticulitis in both the crude and adjusted models (HR, 1.23; 95% CI, 1.11-1.35 [P<.001] and HR, 1.16; 95% CI, 1.05-1.29; [P<.01], respectively)(Table 3); however, when stratified by disease severity, only patients with severe psoriasis were found to be at higher risk (HR, 1.26; 95% CI, 1.15-1.61; P<.001 for the adjusted model).

Comment

The objective of this study was to examine the background risks for specific gastrointestinal pathologies in a large cohort of patients with psoriasis compared to the general population. After adjusting for measured confounders, patients with severe psoriasis had a significantly higher risk of diverticulitis compared to the general population. Although more patients with severe psoriasis developed appendicitis or cholecystitis, the difference was not significant.

The pathogenesis of diverticulosis and diverticulitis has been thought to be related to increased intracolonic pressure and decreased dietary fiber intake, leading to formation of diverticula in the colon.¹⁹ Our study did not correct for differences in diet between the 2 groups, making it a possible confounding variable. Studies evaluating dietary habits of psoriatic patients have found that adult males with psoriasis might consume less fiber compared to healthy patients,²⁰ and psoriasis patients also might consume less whole-grain fiber.²¹ Furthermore, fiber deficiency also might affect gut flora, causing low-grade chronic inflammation,¹⁸ which also has been supported by response to anti-inflammatory medications such as mesalazine.²² Given the autoimmune association between psoriasis and IBD, it is possible that psoriasis also might create an environment of chronic inflammation in the gut, predisposing patients with psoriasis to diverticulitis. However, further research is needed to better evaluate this possibility.

Our study also does not address any potential effects on outcomes of specific treatments for psoriasis. Brandl et al²³ found that patients on immunosuppressive therapy for autoimmune diseases had longer hospital and intensive care unit stays, higher rates of emergency operations, and higher mortality while hospitalized. Because our results suggest that patients with severe psoriasis, who are therefore more likely to require treatment with an immunomodulator, are at higher risk for diverticulitis, these patients also might be at risk for poorer outcomes.

There is no literature evaluating the relationship between psoriasis and appendicitis. Our study found a slightly lower incidence rate compared to the national trend (9.38 per 10,000 patient-years in the United States in 2008) in both healthy patients and psoriasis patients.²⁴ Of note, this statistic includes children, whereas our study did not, which might in part account for the lower rate. However, Cheluvappa et al²⁵ hypothesized a relationship between appendicitis and subsequent appendectomy at a young age and protection against IBD. They also found that the mechanism for protection involves downregulation of the helper T cell (T_H17) pathway,²⁵ which also has been found to play a role in psoriasis pathogenesis.^26,27 Although our results suggest that the risk for appendicitis is not increased for patients with psoriasis, further research might be able to determine if appendicitis and subsequent appendectomy also can offer protection against development of psoriasis.

We found that patients with severe psoriasis had a higher incidence rate of cholecystitis compared to patients with mild psoriasis. Egeberg et al²⁸ found an increased risk for cholelithiasis among patients with psoriasis, which may contribute to a higher rate of cholecystitis. Although both acute and chronic cholecystitis were incorporated in this study, a Russian study found that chronic cholecystitis may be a predictor of progression of psoriasis.²⁹ Moreover, patients with severe psoriasis had a shorter duration to diagnosis of cholecystitis than patients with mild psoriasis. It is possible that patients with severe psoriasis are in a state of greater chronic inflammation than those with mild psoriasis, and therefore, when combined with other risk factors for cholecystitis, may progress to disease more quickly. Alternatively, this finding could be treatment related, as there have been reported cases of cholecystitis related to etanercept use in patients treated for psoriasis and juvenile polyarticular rheumatoid arthritis.^30,31 The relationship is not yet well defined, however, and further research is necessary to evaluate this association.

Study Strengths
Key strengths of this study include the large sample size and diversity of the patient population. Kaiser Permanente Southern California membership generally is representative of the broader community, making our results fairly generalizable to populations with health insurance. Use of a matched control cohort allows the results to be more specific to the disease of interest, and the population-based design minimizes bias.

Study Limitations
This study has several limitations. Although the cohorts were categorized based on type of treatment received, exact therapies were not specified. As a retrospective study, it is difficult to control for potential confounding variables that are not included in the electronic medical record. The results of this study also demonstrated significantly shorter durations to diagnosis of all 3 conditions, indicating that surveillance bias may be present.

Conclusion

Patients with psoriasis may be at an increased risk for diverticulitis compared to patients without psoriasis, which could be due to the chronic inflammatory state induced by psoriasis. Therefore, it may be beneficial for clinicians to evaluate psoriasis patients for other risk factors for diverticulitis and subsequently provide counseling to these patients to minimize their risk for diverticulitis. Psoriasis patients do not appear to be at an increased risk for appendicitis or cholecystitis compared to controls; however, further research is needed for confirmation.

Psoriasis is a chronic skin condition affecting approximately 2% to 3% of the population.^1,2 Beyond cutaneous manifestations, psoriasis is a systemic inflammatory state that is associated with an increased risk for cardiovascular disease, including obesity,^3,4 type 2 diabetes mellitus,^5,6 hypertension,⁵ dyslipidemia,^3,7 metabolic syndrome,⁷ atherosclerosis,⁸ peripheral vascular disease,⁹ coronary artery calcification,¹⁰ myocardial infarction,^11-13 stroke,^9,14 and cardiac death.^15,16

Psoriasis also has been associated with inflammatory bowel disease (IBD), possibly because of similar autoimmune mechanisms in the pathogenesis of both diseases.^17,18 However, there is no literature regarding the risk for acute gastrointestinal pathologies such as appendicitis, cholecystitis, or diverticulitis in patients with psoriasis.

The primary objective of this study was to examine if patients with psoriasis are at increased risk for appendicitis, cholecystitis, or diverticulitis compared to the general population. The secondary objective was to determine if patients with severe psoriasis (ie, patients treated with phototherapy or systemic therapy) are at a higher risk for these conditions compared to patients with mild psoriasis.

Methods

Patients and Tools
A descriptive, population-based cohort study design with controls from a matched cohort was used to ascertain the effect of psoriasis status on patients’ risk for appendicitis, cholecystitis, or diverticulitis. Our cohort was selected using administrative data from Kaiser Permanente Southern California (KPSC) during the study period (January 1, 2004, through December 31, 2016).

Kaiser Permanente Southern California is a large integrated health maintenance organization that includes approximately 4 million patients as of December 31, 2016, and includes roughly 20% of the region’s population. The geographic area served extends from Bakersfield in the lower California Central Valley to San Diego on the border with Mexico. Membership demographics, socioeconomic status, and ethnicity composition are representative of California.

Patients were included if they had a diagnosis of psoriasis (International Classification of Diseases, Ninth Revision, Clinical Modification [ICD-9-CM] code 696.1; International Classification of Diseases, Tenth Revision, Clinical Modification [ICD-10-CM] codes L40.0, L40.4, L40.8, or L40.9) for at least 3 visits between January 1, 2004, and December 31, 2016. Patients were not excluded if they also had a diagnosis of psoriatic arthritis (ICD-9-CM code 696.0; ICD-10-CM code L40.5x). Patients also must have been continuously enrolled for at least 1 year before and 1 year after the index date, which was defined as the date of the third psoriasis diagnosis.

Each patient with psoriasis was assigned to 1 of 2 cohorts: (1) severe psoriasis: patients who received UVB phototherapy, psoralen plus UVA phototherapy, methotrexate, acitretin, cyclosporine, apremilast, etanercept, adalimumab, infliximab, ustekinumab, efalizumab, alefacept, secukinumab, or ixekizumab during the study period; and (2) mild psoriasis: patients who had a diagnosis of psoriasis who did not receive one of these therapies during the study period.

Patients were excluded if they had a history of appendicitis, cholecystitis, or diverticulitis at any time before the index date. Only patients older than 18 years were included.

Patients with psoriasis were frequency matched (1:5) with healthy patients, also from the KPSC network. Individuals were matched by age, sex, and ethnicity.

Statistical Analysis
Baseline characteristics were described with means and SD for continuous variables as well as percentages for categorical variables. Chi-square tests for categorical variables and the Mann-Whitney U Test for continuous variables were used to compare the patients’ characteristics by psoriasis status. Cox proportional hazards regression models were used to examine the risk for appendicitis, cholecystitis, or diverticulitis among patients with and without psoriasis and among patients with mild and severe psoriasis. Proportionality assumption was validated using Pearson product moment correlation between the scaled Schoenfeld residuals and log transformed time for each covariate.

Results were presented as crude (unadjusted) hazard ratios (HRs) and adjusted HRs, where confounding factors (ie, age, sex, ethnicity, body mass index [BMI], alcohol use, smoking status, income, education, and membership length) were adjusted. All tests were performed with SAS EG 5.1 and R software. P<.05 was considered statistically significant. Results are reported with the 95% confidence interval (CI), when appropriate.

Results

A total of 1,690,214 KPSC patients were eligible for the study; 10,307 (0.6%) met diagnostic and inclusion criteria for the psoriasis cohort. Patients with psoriasis had a significantly higher mean BMI (29.9 vs 28.7; P<.0001) as well as higher mean rates of alcohol use (56% vs 53%; P<.0001) and smoking (47% vs 38%; P<.01) compared to controls. Psoriasis patients had a shorter average duration of membership within the Kaiser network (P=.0001) compared to controls.

A total of 7416 patients met criteria for mild psoriasis and 2891 patients met criteria for severe psoriasis (eTable). Patients with severe psoriasis were significantly younger and had significantly higher mean BMI compared to patients with mild psoriasis (P<.0001 and P=.0001, respectively). No significant difference in rates of alcohol or tobacco use was detected among patients with mild and severe psoriasis.

Diverticulitis
Patients with psoriasis had a significantly greater prevalence of diverticulitis compared to the control cohort (5.1% vs 4.2%; P<.0001). There was no difference in prevalence between the severe psoriasis group and the mild psoriasis group (P=.96), but the time to diagnosis of diverticulitis was shorter in the severe psoriasis group than in the mild psoriasis group (7.2 years vs 7.9 years; P<.0001). Psoriasis patients had an incidence rate of diverticulitis of 6.61 per 1000 patient-years compared to 5.38 per 1000 patient-years in the control group. Psoriasis conferred a higher risk for diverticulitis in both the crude and adjusted models (HR, 1.23; 95% CI, 1.11-1.35 [P<.001] and HR, 1.16; 95% CI, 1.05-1.29; [P<.01], respectively)(Table 3); however, when stratified by disease severity, only patients with severe psoriasis were found to be at higher risk (HR, 1.26; 95% CI, 1.15-1.61; P<.001 for the adjusted model).

Comment

The objective of this study was to examine the background risks for specific gastrointestinal pathologies in a large cohort of patients with psoriasis compared to the general population. After adjusting for measured confounders, patients with severe psoriasis had a significantly higher risk of diverticulitis compared to the general population. Although more patients with severe psoriasis developed appendicitis or cholecystitis, the difference was not significant.

The pathogenesis of diverticulosis and diverticulitis has been thought to be related to increased intracolonic pressure and decreased dietary fiber intake, leading to formation of diverticula in the colon.¹⁹ Our study did not correct for differences in diet between the 2 groups, making it a possible confounding variable. Studies evaluating dietary habits of psoriatic patients have found that adult males with psoriasis might consume less fiber compared to healthy patients,²⁰ and psoriasis patients also might consume less whole-grain fiber.²¹ Furthermore, fiber deficiency also might affect gut flora, causing low-grade chronic inflammation,¹⁸ which also has been supported by response to anti-inflammatory medications such as mesalazine.²² Given the autoimmune association between psoriasis and IBD, it is possible that psoriasis also might create an environment of chronic inflammation in the gut, predisposing patients with psoriasis to diverticulitis. However, further research is needed to better evaluate this possibility.

Our study also does not address any potential effects on outcomes of specific treatments for psoriasis. Brandl et al²³ found that patients on immunosuppressive therapy for autoimmune diseases had longer hospital and intensive care unit stays, higher rates of emergency operations, and higher mortality while hospitalized. Because our results suggest that patients with severe psoriasis, who are therefore more likely to require treatment with an immunomodulator, are at higher risk for diverticulitis, these patients also might be at risk for poorer outcomes.

There is no literature evaluating the relationship between psoriasis and appendicitis. Our study found a slightly lower incidence rate compared to the national trend (9.38 per 10,000 patient-years in the United States in 2008) in both healthy patients and psoriasis patients.²⁴ Of note, this statistic includes children, whereas our study did not, which might in part account for the lower rate. However, Cheluvappa et al²⁵ hypothesized a relationship between appendicitis and subsequent appendectomy at a young age and protection against IBD. They also found that the mechanism for protection involves downregulation of the helper T cell (T_H17) pathway,²⁵ which also has been found to play a role in psoriasis pathogenesis.^26,27 Although our results suggest that the risk for appendicitis is not increased for patients with psoriasis, further research might be able to determine if appendicitis and subsequent appendectomy also can offer protection against development of psoriasis.

We found that patients with severe psoriasis had a higher incidence rate of cholecystitis compared to patients with mild psoriasis. Egeberg et al²⁸ found an increased risk for cholelithiasis among patients with psoriasis, which may contribute to a higher rate of cholecystitis. Although both acute and chronic cholecystitis were incorporated in this study, a Russian study found that chronic cholecystitis may be a predictor of progression of psoriasis.²⁹ Moreover, patients with severe psoriasis had a shorter duration to diagnosis of cholecystitis than patients with mild psoriasis. It is possible that patients with severe psoriasis are in a state of greater chronic inflammation than those with mild psoriasis, and therefore, when combined with other risk factors for cholecystitis, may progress to disease more quickly. Alternatively, this finding could be treatment related, as there have been reported cases of cholecystitis related to etanercept use in patients treated for psoriasis and juvenile polyarticular rheumatoid arthritis.^30,31 The relationship is not yet well defined, however, and further research is necessary to evaluate this association.

Study Strengths
Key strengths of this study include the large sample size and diversity of the patient population. Kaiser Permanente Southern California membership generally is representative of the broader community, making our results fairly generalizable to populations with health insurance. Use of a matched control cohort allows the results to be more specific to the disease of interest, and the population-based design minimizes bias.

Study Limitations
This study has several limitations. Although the cohorts were categorized based on type of treatment received, exact therapies were not specified. As a retrospective study, it is difficult to control for potential confounding variables that are not included in the electronic medical record. The results of this study also demonstrated significantly shorter durations to diagnosis of all 3 conditions, indicating that surveillance bias may be present.

Conclusion

Patients with psoriasis may be at an increased risk for diverticulitis compared to patients without psoriasis, which could be due to the chronic inflammatory state induced by psoriasis. Therefore, it may be beneficial for clinicians to evaluate psoriasis patients for other risk factors for diverticulitis and subsequently provide counseling to these patients to minimize their risk for diverticulitis. Psoriasis patients do not appear to be at an increased risk for appendicitis or cholecystitis compared to controls; however, further research is needed for confirmation.

Here are 5 articles from the March issue of Clinician Reviews (individual articles are valid for one year from date of publication—expiration dates below):

1. Endometriosis surgery: Women can expect years-long benefits

To take the posttest, go to: https://bit.ly/2Ez8mdu
Expires January 3, 2019

2. Cerebral small vessel disease progression linked to MCI in hypertensive patients

To take the posttest, go to: https://bit.ly/2ExDV7o
Expires January 4, 2019

3. Adult atopic dermatitis is fraught with dermatologic comorbidities

To take the posttest, go to: https://bit.ly/2Vl7E9a
Expires January 11, 2019

4. Antidepressants tied to greater hip fracture incidence in older adults

To take the posttest, go to: https://bit.ly/2GRfMeH
Expires January 4, 2019

5. Researchers exploring ways to mitigate aging’s impact on diabetes

To take the posttest, go to: https://bit.ly/2tFxF7v
Expires January 8, 2019

Here are 5 articles from the March issue of Clinician Reviews (individual articles are valid for one year from date of publication—expiration dates below):

1. Endometriosis surgery: Women can expect years-long benefits

To take the posttest, go to: https://bit.ly/2Ez8mdu
Expires January 3, 2019

2. Cerebral small vessel disease progression linked to MCI in hypertensive patients

To take the posttest, go to: https://bit.ly/2ExDV7o
Expires January 4, 2019

3. Adult atopic dermatitis is fraught with dermatologic comorbidities

To take the posttest, go to: https://bit.ly/2Vl7E9a
Expires January 11, 2019

4. Antidepressants tied to greater hip fracture incidence in older adults

To take the posttest, go to: https://bit.ly/2GRfMeH
Expires January 4, 2019

5. Researchers exploring ways to mitigate aging’s impact on diabetes

To take the posttest, go to: https://bit.ly/2tFxF7v
Expires January 8, 2019

Here are 5 articles from the March issue of Clinician Reviews (individual articles are valid for one year from date of publication—expiration dates below):

1. Endometriosis surgery: Women can expect years-long benefits

To take the posttest, go to: https://bit.ly/2Ez8mdu
Expires January 3, 2019

2. Cerebral small vessel disease progression linked to MCI in hypertensive patients

To take the posttest, go to: https://bit.ly/2ExDV7o
Expires January 4, 2019

3. Adult atopic dermatitis is fraught with dermatologic comorbidities

To take the posttest, go to: https://bit.ly/2Vl7E9a
Expires January 11, 2019

4. Antidepressants tied to greater hip fracture incidence in older adults

To take the posttest, go to: https://bit.ly/2GRfMeH
Expires January 4, 2019

5. Researchers exploring ways to mitigate aging’s impact on diabetes

To take the posttest, go to: https://bit.ly/2tFxF7v
Expires January 8, 2019

WASHINGTON – Treating pruritus in children necessitates different approaches than those typically used to treat adult pruritus, Suephy C. Chen, MD, said at the annual meeting of the American Academy of Dermatology.

Using special scales to measure itch in children and understanding that quality of life concerns may be different for children should also be kept in mind, said Dr. Chen, professor of dermatology at Emory University, Atlanta. Furthermore, several psychiatric comorbidities that have been associated with pediatric pruritus, such as ADHD and suicidal thoughts. Another consideration is that a child’s pruritus can have significant effects on his or her parents.

Measuring itch is challenging in children, who may have difficulty responding to visual analogue scales, verbal rating scales, and numerical rating scales. Dr. Chen and her colleagues developed the ItchyQuant scale as a self-report measure of itch severity  (J Invest Dermatol. 2017 Jan;137[1]:57-61). It is a scale from 0 to 10 with cartoon illustrations depicting increasing itch severity, from no itch to the “worst itch imaginable.” Currently it is validated only in adults, but they are working towards getting it validated in children.

Another itch assessment scale for children, Itch Man, is available, but has only been studied in children who have survived burns.

The ItchyQOL scale measures the extent to which itch affects quality of life in adults. It examines the symptoms associated with itch, as well as its functional and emotional effects. But children’s concerns about quality of life are not the same as those of adults, so Dr. Chen and her colleagues used ItchyQOL as a basis for the “Tween ItchyQOL,” which is intended for children aged 8-17 years, and the “Kids ItchyQOL,” which is intended for children aged 6-7 years. The Tween ItchyQOL includes items (such as being made fun of) that are not in the ItchyQOL and eliminates items (such as working and spending money) that do not apply to children. The Kids ItchyQOL includes cartoons to help children understand the questions.

Dermatologists often use parents as proxies to measure their children’s itch, assuming that the latter’s responses might be unreliable. But when Dr. Chen and her colleagues administered the ItchyQuant to children with pruritus, parents, and their medical providers to evaluate the extent of agreement among assessors, they found that parents’ scores were higher than their children’s scores, although the difference was not significant.

Providers’ scores, however, were significantly lower than those of children and parents. All scores were in the moderate range. Dr. Chen and colleagues also found that, for each 1-point increase in the difference between children’s and parents’ responses, parents were 1.25 times less likely to have experience with chronic pruritus, outside of their children. This finding provides a gauge of how well a parent can serve as a proxy to characterize his or her child’s itch.

Adolescents are in general a troubled group, and caregivers have concerns about suicide in the adolescent population, Dr. Chen said. She referred to a large study of adolescents published in 2012, which indicated that the prevalence of suicidal ideation was 8.4% among adolescents with no itch, compared with 21.1% among adolescents with severe itch (Acta Derm Venereol. 2012 Sep;92[5]:543-6).

In the study, those with severe itch were three times more likely to have suicidal ideation than the general population, which Dr. Chen noted was comparable with that of suicidal ideation in patients with chronic pain in the study (odds ratio, 3.8).

Cross-sectional data suggest a link between itching and ADHD, but “it’s a chicken-and-egg phenomenon,” she said. “If you’re so itchy and squirmy, you’re not going to pay attention. Then again, if you’re not paying attention, maybe you’re that much more prone to scratch.” Longitudinal data indicate that improving itch correlates with improvement in ADHD symptoms.

In addition, pruritus affects the genders disproportionately. Girls report a significantly greater impact on quality of life than boys when itching is severe, with much of the difference in emotional impact, said Dr. Chen. Boys may report more functional impact than girls.

Chronic pruritus also affects parents, who may have disturbed sleep, feel stress about their own parenting, and have difficulty enforcing discipline. “They feel an incredible amount of guilt and blame for giving this to their child,” she commented. “As more and more places develop itch centers, it would be good to have a multidisciplinary approach bringing in mental health providers and social workers, because the impact of itch on parents can be quite profound.”

Dr. Chen reported disclosures with several companies, including BioPharmX, Dermecular Therapeutics, Leo Pharma, and Unilever.

egreb@mdedge.com

WASHINGTON – Treating pruritus in children necessitates different approaches than those typically used to treat adult pruritus, Suephy C. Chen, MD, said at the annual meeting of the American Academy of Dermatology.

Using special scales to measure itch in children and understanding that quality of life concerns may be different for children should also be kept in mind, said Dr. Chen, professor of dermatology at Emory University, Atlanta. Furthermore, several psychiatric comorbidities that have been associated with pediatric pruritus, such as ADHD and suicidal thoughts. Another consideration is that a child’s pruritus can have significant effects on his or her parents.

Measuring itch is challenging in children, who may have difficulty responding to visual analogue scales, verbal rating scales, and numerical rating scales. Dr. Chen and her colleagues developed the ItchyQuant scale as a self-report measure of itch severity  (J Invest Dermatol. 2017 Jan;137[1]:57-61). It is a scale from 0 to 10 with cartoon illustrations depicting increasing itch severity, from no itch to the “worst itch imaginable.” Currently it is validated only in adults, but they are working towards getting it validated in children.

Another itch assessment scale for children, Itch Man, is available, but has only been studied in children who have survived burns.

The ItchyQOL scale measures the extent to which itch affects quality of life in adults. It examines the symptoms associated with itch, as well as its functional and emotional effects. But children’s concerns about quality of life are not the same as those of adults, so Dr. Chen and her colleagues used ItchyQOL as a basis for the “Tween ItchyQOL,” which is intended for children aged 8-17 years, and the “Kids ItchyQOL,” which is intended for children aged 6-7 years. The Tween ItchyQOL includes items (such as being made fun of) that are not in the ItchyQOL and eliminates items (such as working and spending money) that do not apply to children. The Kids ItchyQOL includes cartoons to help children understand the questions.

Dermatologists often use parents as proxies to measure their children’s itch, assuming that the latter’s responses might be unreliable. But when Dr. Chen and her colleagues administered the ItchyQuant to children with pruritus, parents, and their medical providers to evaluate the extent of agreement among assessors, they found that parents’ scores were higher than their children’s scores, although the difference was not significant.

Providers’ scores, however, were significantly lower than those of children and parents. All scores were in the moderate range. Dr. Chen and colleagues also found that, for each 1-point increase in the difference between children’s and parents’ responses, parents were 1.25 times less likely to have experience with chronic pruritus, outside of their children. This finding provides a gauge of how well a parent can serve as a proxy to characterize his or her child’s itch.

Adolescents are in general a troubled group, and caregivers have concerns about suicide in the adolescent population, Dr. Chen said. She referred to a large study of adolescents published in 2012, which indicated that the prevalence of suicidal ideation was 8.4% among adolescents with no itch, compared with 21.1% among adolescents with severe itch (Acta Derm Venereol. 2012 Sep;92[5]:543-6).

In the study, those with severe itch were three times more likely to have suicidal ideation than the general population, which Dr. Chen noted was comparable with that of suicidal ideation in patients with chronic pain in the study (odds ratio, 3.8).

Cross-sectional data suggest a link between itching and ADHD, but “it’s a chicken-and-egg phenomenon,” she said. “If you’re so itchy and squirmy, you’re not going to pay attention. Then again, if you’re not paying attention, maybe you’re that much more prone to scratch.” Longitudinal data indicate that improving itch correlates with improvement in ADHD symptoms.

In addition, pruritus affects the genders disproportionately. Girls report a significantly greater impact on quality of life than boys when itching is severe, with much of the difference in emotional impact, said Dr. Chen. Boys may report more functional impact than girls.

Chronic pruritus also affects parents, who may have disturbed sleep, feel stress about their own parenting, and have difficulty enforcing discipline. “They feel an incredible amount of guilt and blame for giving this to their child,” she commented. “As more and more places develop itch centers, it would be good to have a multidisciplinary approach bringing in mental health providers and social workers, because the impact of itch on parents can be quite profound.”

Dr. Chen reported disclosures with several companies, including BioPharmX, Dermecular Therapeutics, Leo Pharma, and Unilever.

egreb@mdedge.com

WASHINGTON – Treating pruritus in children necessitates different approaches than those typically used to treat adult pruritus, Suephy C. Chen, MD, said at the annual meeting of the American Academy of Dermatology.

Using special scales to measure itch in children and understanding that quality of life concerns may be different for children should also be kept in mind, said Dr. Chen, professor of dermatology at Emory University, Atlanta. Furthermore, several psychiatric comorbidities that have been associated with pediatric pruritus, such as ADHD and suicidal thoughts. Another consideration is that a child’s pruritus can have significant effects on his or her parents.

Measuring itch is challenging in children, who may have difficulty responding to visual analogue scales, verbal rating scales, and numerical rating scales. Dr. Chen and her colleagues developed the ItchyQuant scale as a self-report measure of itch severity  (J Invest Dermatol. 2017 Jan;137[1]:57-61). It is a scale from 0 to 10 with cartoon illustrations depicting increasing itch severity, from no itch to the “worst itch imaginable.” Currently it is validated only in adults, but they are working towards getting it validated in children.

Another itch assessment scale for children, Itch Man, is available, but has only been studied in children who have survived burns.

The ItchyQOL scale measures the extent to which itch affects quality of life in adults. It examines the symptoms associated with itch, as well as its functional and emotional effects. But children’s concerns about quality of life are not the same as those of adults, so Dr. Chen and her colleagues used ItchyQOL as a basis for the “Tween ItchyQOL,” which is intended for children aged 8-17 years, and the “Kids ItchyQOL,” which is intended for children aged 6-7 years. The Tween ItchyQOL includes items (such as being made fun of) that are not in the ItchyQOL and eliminates items (such as working and spending money) that do not apply to children. The Kids ItchyQOL includes cartoons to help children understand the questions.

Dermatologists often use parents as proxies to measure their children’s itch, assuming that the latter’s responses might be unreliable. But when Dr. Chen and her colleagues administered the ItchyQuant to children with pruritus, parents, and their medical providers to evaluate the extent of agreement among assessors, they found that parents’ scores were higher than their children’s scores, although the difference was not significant.

Providers’ scores, however, were significantly lower than those of children and parents. All scores were in the moderate range. Dr. Chen and colleagues also found that, for each 1-point increase in the difference between children’s and parents’ responses, parents were 1.25 times less likely to have experience with chronic pruritus, outside of their children. This finding provides a gauge of how well a parent can serve as a proxy to characterize his or her child’s itch.

Adolescents are in general a troubled group, and caregivers have concerns about suicide in the adolescent population, Dr. Chen said. She referred to a large study of adolescents published in 2012, which indicated that the prevalence of suicidal ideation was 8.4% among adolescents with no itch, compared with 21.1% among adolescents with severe itch (Acta Derm Venereol. 2012 Sep;92[5]:543-6).

In the study, those with severe itch were three times more likely to have suicidal ideation than the general population, which Dr. Chen noted was comparable with that of suicidal ideation in patients with chronic pain in the study (odds ratio, 3.8).

Cross-sectional data suggest a link between itching and ADHD, but “it’s a chicken-and-egg phenomenon,” she said. “If you’re so itchy and squirmy, you’re not going to pay attention. Then again, if you’re not paying attention, maybe you’re that much more prone to scratch.” Longitudinal data indicate that improving itch correlates with improvement in ADHD symptoms.

In addition, pruritus affects the genders disproportionately. Girls report a significantly greater impact on quality of life than boys when itching is severe, with much of the difference in emotional impact, said Dr. Chen. Boys may report more functional impact than girls.

Chronic pruritus also affects parents, who may have disturbed sleep, feel stress about their own parenting, and have difficulty enforcing discipline. “They feel an incredible amount of guilt and blame for giving this to their child,” she commented. “As more and more places develop itch centers, it would be good to have a multidisciplinary approach bringing in mental health providers and social workers, because the impact of itch on parents can be quite profound.”

Dr. Chen reported disclosures with several companies, including BioPharmX, Dermecular Therapeutics, Leo Pharma, and Unilever.

egreb@mdedge.com

WASHINGTON – Bermekimab, a human monoclonal antibody, cleared lesions and improved pain in more than 60% of patients who received it during a 12-week proof-of-concept trial. It was nearly as effective in patients refractory to anti–tumor necrosis factor (TNF) therapy as it was to those naive to the treatment.

The antibody, which is derived directly from healthy human volunteers and then lab expanded, also improved patients’ quality of life in a “clinically meaningful way,” Alice Gottlieb, MD, PhD said at the annual meeting of the American Academy of Dermatology.

“These are sick people, and improvement of this kind is really something very important,” said Dr. Gottlieb of Mount Sinai Medical Center in New York. “I think what we see here supports the movement of bermekimab into phase 3 studies for HS [hidradenitis suppurativa].”

Bermekimab is the first inhibitor of IL-1 alpha to be investigated in HS. An overabundance of the cytokine produces several potentially problematic effects. IL-1 alpha induces inflammatory cells to migrate into the skin, drives neoangiogenesis, potentiates pain, and induces matrix metalloproteinase. The last two are particularly an issue in patients with HS. The abscesses and fistulas cause severe pain, which Dr. Gottlieb said is an undertreated and an underappreciated driver of disease disability. The tissue breakdown characteristic of the disease can also be highly disfiguring. “Many patients, especially my female patients, look as if they are basically autodigesting.”

IL-1 alpha also induces procollagen type I and III and fibroblast proliferation, contributing to the scarring many patients experience.

“Ten years ago, I thought it would be a potential target for HS,” Dr, Gottlieb said, and the idea has finally come to fruition through studies by biopharmaceutical company XBiotech in Austin, Tex. Dr. Gottlieb designed the treatment protocol and was a principal investigator on the study.

A similarly positive 2018 study employed twice-weekly intravenous infusions; this study utilized a more-concentrated form of the antibody delivered subcutaneously from prefilled syringes.

The study comprised 42 patients, 24 of whom had failed a course of anti-TNF therapy and 18 of whom were anti-TNF naive. Each group received bermekimab 400 mg subcutaneous once a week for 12 weeks. The primary endpoint was change on the Hidradenitis Suppurativa Clinical Response Score; good response was deemed at least a 50% reduction in abscesses and inflammatory nodules, with no new abscesses or draining fistulas. Secondary endpoints included pain scores, patient quality of life, and the physicians global clinical assessment.

At baseline, subjects in the anti-TNF–refractory group had a worse clinical profile than the naive patients, with more abscesses and inflammatory nodules (mean, 14 vs. 6) and worse scores on the Physicians Global Assessment. But they reported similar pain on a 10-point scale (around 8) and negative quality of life (17/30). Both groups experienced anxiety and depression.

Eight patients dropped out before finishing the trial for a variety of reasons, including family and transportation issues and comorbid illness. Only one discontinued for a reaction to the study drug (injection site redness). These patients were included in the final analysis in a last observation carried forward.

About 10% of patients began to experience improvement as soon as 2 weeks after the first injection. By week 6, 40% of the refractory patients and 10% of the naive patents had experienced a lesion reduction of at least 50%. By the end of the study, however, about 62% of patients in each group achieved that goal.

By week 12, the mean improvement in the Physicians Global Assessment was about 23% in the refractory group and 53% in the naive group. Both results were significant improvements over baseline.

The mean improvement in the pain score was about 54% in the refractory group and 65% in the naive group. In a scale that measured patients’ view of their disease severity, refractory patients reported a mean 40% improvement, and naive patients, a mean 67% improvement.

There were 57 adverse events recorded; 94% were grade 1 or 2. There were two serious adverse events requiring hospitalization – a fall and an admission for HS pain. Neither were judged related to the study drug. Two patients experienced injection site reactions and one patient experienced six bouts of nausea. There were no serious infections, no major cardiovascular events, and no neoplasms.

Dr. Gottlieb designed the study protocol and was a principal investigator. She did not receive financial compensation from the company.

msullivan@mdege.com

WASHINGTON – Bermekimab, a human monoclonal antibody, cleared lesions and improved pain in more than 60% of patients who received it during a 12-week proof-of-concept trial. It was nearly as effective in patients refractory to anti–tumor necrosis factor (TNF) therapy as it was to those naive to the treatment.

The antibody, which is derived directly from healthy human volunteers and then lab expanded, also improved patients’ quality of life in a “clinically meaningful way,” Alice Gottlieb, MD, PhD said at the annual meeting of the American Academy of Dermatology.

“These are sick people, and improvement of this kind is really something very important,” said Dr. Gottlieb of Mount Sinai Medical Center in New York. “I think what we see here supports the movement of bermekimab into phase 3 studies for HS [hidradenitis suppurativa].”

Bermekimab is the first inhibitor of IL-1 alpha to be investigated in HS. An overabundance of the cytokine produces several potentially problematic effects. IL-1 alpha induces inflammatory cells to migrate into the skin, drives neoangiogenesis, potentiates pain, and induces matrix metalloproteinase. The last two are particularly an issue in patients with HS. The abscesses and fistulas cause severe pain, which Dr. Gottlieb said is an undertreated and an underappreciated driver of disease disability. The tissue breakdown characteristic of the disease can also be highly disfiguring. “Many patients, especially my female patients, look as if they are basically autodigesting.”

IL-1 alpha also induces procollagen type I and III and fibroblast proliferation, contributing to the scarring many patients experience.

“Ten years ago, I thought it would be a potential target for HS,” Dr, Gottlieb said, and the idea has finally come to fruition through studies by biopharmaceutical company XBiotech in Austin, Tex. Dr. Gottlieb designed the treatment protocol and was a principal investigator on the study.

A similarly positive 2018 study employed twice-weekly intravenous infusions; this study utilized a more-concentrated form of the antibody delivered subcutaneously from prefilled syringes.

The study comprised 42 patients, 24 of whom had failed a course of anti-TNF therapy and 18 of whom were anti-TNF naive. Each group received bermekimab 400 mg subcutaneous once a week for 12 weeks. The primary endpoint was change on the Hidradenitis Suppurativa Clinical Response Score; good response was deemed at least a 50% reduction in abscesses and inflammatory nodules, with no new abscesses or draining fistulas. Secondary endpoints included pain scores, patient quality of life, and the physicians global clinical assessment.

At baseline, subjects in the anti-TNF–refractory group had a worse clinical profile than the naive patients, with more abscesses and inflammatory nodules (mean, 14 vs. 6) and worse scores on the Physicians Global Assessment. But they reported similar pain on a 10-point scale (around 8) and negative quality of life (17/30). Both groups experienced anxiety and depression.

Eight patients dropped out before finishing the trial for a variety of reasons, including family and transportation issues and comorbid illness. Only one discontinued for a reaction to the study drug (injection site redness). These patients were included in the final analysis in a last observation carried forward.

About 10% of patients began to experience improvement as soon as 2 weeks after the first injection. By week 6, 40% of the refractory patients and 10% of the naive patents had experienced a lesion reduction of at least 50%. By the end of the study, however, about 62% of patients in each group achieved that goal.

By week 12, the mean improvement in the Physicians Global Assessment was about 23% in the refractory group and 53% in the naive group. Both results were significant improvements over baseline.

The mean improvement in the pain score was about 54% in the refractory group and 65% in the naive group. In a scale that measured patients’ view of their disease severity, refractory patients reported a mean 40% improvement, and naive patients, a mean 67% improvement.

There were 57 adverse events recorded; 94% were grade 1 or 2. There were two serious adverse events requiring hospitalization – a fall and an admission for HS pain. Neither were judged related to the study drug. Two patients experienced injection site reactions and one patient experienced six bouts of nausea. There were no serious infections, no major cardiovascular events, and no neoplasms.

Dr. Gottlieb designed the study protocol and was a principal investigator. She did not receive financial compensation from the company.

msullivan@mdege.com

WASHINGTON – Bermekimab, a human monoclonal antibody, cleared lesions and improved pain in more than 60% of patients who received it during a 12-week proof-of-concept trial. It was nearly as effective in patients refractory to anti–tumor necrosis factor (TNF) therapy as it was to those naive to the treatment.

The antibody, which is derived directly from healthy human volunteers and then lab expanded, also improved patients’ quality of life in a “clinically meaningful way,” Alice Gottlieb, MD, PhD said at the annual meeting of the American Academy of Dermatology.

“These are sick people, and improvement of this kind is really something very important,” said Dr. Gottlieb of Mount Sinai Medical Center in New York. “I think what we see here supports the movement of bermekimab into phase 3 studies for HS [hidradenitis suppurativa].”

Bermekimab is the first inhibitor of IL-1 alpha to be investigated in HS. An overabundance of the cytokine produces several potentially problematic effects. IL-1 alpha induces inflammatory cells to migrate into the skin, drives neoangiogenesis, potentiates pain, and induces matrix metalloproteinase. The last two are particularly an issue in patients with HS. The abscesses and fistulas cause severe pain, which Dr. Gottlieb said is an undertreated and an underappreciated driver of disease disability. The tissue breakdown characteristic of the disease can also be highly disfiguring. “Many patients, especially my female patients, look as if they are basically autodigesting.”

IL-1 alpha also induces procollagen type I and III and fibroblast proliferation, contributing to the scarring many patients experience.

“Ten years ago, I thought it would be a potential target for HS,” Dr, Gottlieb said, and the idea has finally come to fruition through studies by biopharmaceutical company XBiotech in Austin, Tex. Dr. Gottlieb designed the treatment protocol and was a principal investigator on the study.

A similarly positive 2018 study employed twice-weekly intravenous infusions; this study utilized a more-concentrated form of the antibody delivered subcutaneously from prefilled syringes.

The study comprised 42 patients, 24 of whom had failed a course of anti-TNF therapy and 18 of whom were anti-TNF naive. Each group received bermekimab 400 mg subcutaneous once a week for 12 weeks. The primary endpoint was change on the Hidradenitis Suppurativa Clinical Response Score; good response was deemed at least a 50% reduction in abscesses and inflammatory nodules, with no new abscesses or draining fistulas. Secondary endpoints included pain scores, patient quality of life, and the physicians global clinical assessment.

At baseline, subjects in the anti-TNF–refractory group had a worse clinical profile than the naive patients, with more abscesses and inflammatory nodules (mean, 14 vs. 6) and worse scores on the Physicians Global Assessment. But they reported similar pain on a 10-point scale (around 8) and negative quality of life (17/30). Both groups experienced anxiety and depression.

Eight patients dropped out before finishing the trial for a variety of reasons, including family and transportation issues and comorbid illness. Only one discontinued for a reaction to the study drug (injection site redness). These patients were included in the final analysis in a last observation carried forward.

About 10% of patients began to experience improvement as soon as 2 weeks after the first injection. By week 6, 40% of the refractory patients and 10% of the naive patents had experienced a lesion reduction of at least 50%. By the end of the study, however, about 62% of patients in each group achieved that goal.

By week 12, the mean improvement in the Physicians Global Assessment was about 23% in the refractory group and 53% in the naive group. Both results were significant improvements over baseline.

The mean improvement in the pain score was about 54% in the refractory group and 65% in the naive group. In a scale that measured patients’ view of their disease severity, refractory patients reported a mean 40% improvement, and naive patients, a mean 67% improvement.

There were 57 adverse events recorded; 94% were grade 1 or 2. There were two serious adverse events requiring hospitalization – a fall and an admission for HS pain. Neither were judged related to the study drug. Two patients experienced injection site reactions and one patient experienced six bouts of nausea. There were no serious infections, no major cardiovascular events, and no neoplasms.

Dr. Gottlieb designed the study protocol and was a principal investigator. She did not receive financial compensation from the company.

msullivan@mdege.com