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...