Systemic treatment for severe atopic dermatitis in children: a case series.

Background: Atopic dermatitis (AD) is children's most frequent chronic inflammatory skin disease. In most patients, this condition is controlled with topical treatments; however, some patients with severe AD do not respond to these treatments, requiring systemic therapy. There is insufficient information about the ideal dose, time of use, clinical response, and safety of systemic therapy in children with severe AD. This study described the clinical characteristics of patients with severe AD who required systemic treatment, drugs used, their clinical course, adverse effects, and associated complications.

Methods: We conducted a retrospective review of the records of pediatric patients with severe AD treated in the Dermatology Clinic, Instituto Nacional de Pediatría (2000 to 2018), who required systemic treatment for more than 3 months.

Results: We included 21 patients. The mean age at disease onset was 3.31 years. The drugs used were methotrexate (57.1%), thalidomide (38%), prednisone (42.8%), azathioprine (19%), mycophenolate mofetil (9.5%), cyclosporine (4.7%), and systemic steroids as bridging therapy (42.8%). Adverse effects were mild and were observed in two patients (9.5%) treated with methotrexate and mycophenolate mofetil.

Conclusions: Methotrexate was the most frequently used drug in > 50% of the patients, and most patients attained remission. Cyclosporine, azathioprine, and mycophenolate mofetil were also effective. Side effects were mild and infrequent. Comparative studies of systemic treatments for severe AD in the pediatric population are necessary.