Abstract
A woman in her 70s presented with a skin eruption on the left dorsal foot that had developed spontaneously 2 weeks before. The rash initially appeared with pruritic papules that evolved to fluid-filled blisters and persisted despite self-treatment with topical hydrocortisone 1% cream and antibiotic ointment. Examination revealed an erythematous plaque with tense and denuded bullae (Figure 1). She received oral cephalexin for presumed bullous impetigo. Bacterial culture and herpes simplex virus and varicella zoster virus polymerase chain reaction (PCR) swab results were negative.
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