Diffuse Rash

A 1-year-old boy presents with a diffuse rash on the body for the past 3 days (Figures 1 and 2). The rash started on his hands, then progressed to include his face, trunk, buttocks, groin, legs and feet. He also developed low-grade fevers and increased fussiness. He has a history of atopic dermatitis that has been difficult to control with hydrocortisone 2.5% ointment. He attends a day care center three times a week.