<prompt> 60 year female with tense bulla in lower extremity and subepidermal bullous lesion on microscopy, diagnosis is?Bullous pemphigoidPemphigus vulgarisErythema multiformeDermatitis herpetiformis  <response>: Ans. is a i.e., Bullous pemphgoid See explanation- 1 of session- 10 of Skin of All India 2014-15 pattern of this book. 