What was your diagnosis?

From the Department of Dermatology and Dermatopathology, University of Connecticut Health Center, Farmington. The authors report no conflict of interest. Correspondence: Mona Shahriari, MD, Department of Dermatology and Dermatopathology, University of Connecticut Health Center, 21 South Rd, Farmington, CT 06032 (mshahriari@resident.uchc.edu). A 32-year-old woman with no remarkable medical history presented with a progressively worsening erythematous and edematous plaque on the right cheek of 8 days’ duration. She had previously been treated by her primary care physician with cephalexin for 3 days and trimethoprim-sulfamethoxazole for 2 days, which resulted in “flattening” of the plaque, but the lesion did not resolve. She was referred to our dermatology clinic for further evaluation. She denied any trauma to the cheek or scratching of the lesion. On physical examination, a 2-cm pink, erythematous, edematous plaque with a central eschar was noted on the right cheek with crusting of the right nasal wall.