Access Dermatology

A 14-month-old, full-term, normal birth weight white boy presented with a 4-month history of psoriasiform plaques in perioral and perianal region, elbows and knees, associated with mild diarrhea, loss of appetite and irritability. The baby was weaned at 9 months age and 4 weeks later perioral lesions appeared. Within a short time, other parts of his body became affected. His mood changed and he became irritable. Previously, he had several upper respiratory tract infections...