A 6-year-old healthy boy was presented in the ED with a blistering eruption on his right middle finger. The rash had started 10 days ago as an erythematous papule and rapidly progressed into an annular plaque that blistered. Examination CBC and C-reactive protein levels were within limits. Skin swab for bacteriological testing was negative The patient was prescribed with a topical preparation containing clobetasone butyrate, oxytetracycline, and nystatin.
However, the rash worsened. What is the most likely diagnosis in this case? *This case is from Docplexus editorial team for educative purpose only. Source: NEJM
