04/30/2011
Alexander K.C. Leung, MD, MBBS, FRCPC, FRCP; William Lane M. Robson, MD, FRCPC, FRCP
This 9-year-old girl had a slightly pruritic perioral rash for 6 months. The skin around her mouth was red, scaly, thickened, and hyperpigmented. She also had eczematous lesions in the antecubital and...