A middle aged female has flaccid bullae in the skin and oral erosion. Histopathology shows intraepidermal acanthololytic blisters. The most likely diagnosis is –: (A) Pemphigus vulgaris, (B) Paraneoplastic pemphigus, (C) Bullous pemphigoid, (D) Dermatitis hepatiformis
Answer is A. Clues given are :-


Flaccid bullae
Oral erosion (mucosal involvement)
Intraepidermal acantholysis


Diagnosis is pemphigus vulgaris.