A Pruritic, Polygonal, Papular, Rash on a 10-year-old Boy

The eruption has become widespread over a 2-week period. Use your memory of dermatology basics to help make the diagnosis.

It's after lunch in the acute care clinic and your nurse opens the afternoon by telling you that a difficult dermatology case awaits. You're no stranger to this kind of challenge and enter the exam room with great confidence.The patient: a 10-year-old boy with a history of numular eczema and a recent 2-week history of a widespread rash. Follow the case and its clues in the slides above. You may need to draw on your memory of medical school Derm 101 to generate your diagnosis.