A young boy presented with a lesion over his right buttock, which had peripheral scaling with central scarring. The investigation of choice would be?
Central clearing: T. Corporis - KOH smear Central scarring: Lupus vulgaris - Biopsy Central crusting: Leishmaniasis - LT body demonstration
Tzanck smear
KOH preparation
Biopsy
Sabourad's agar
Mycobacterial Infections