<prompt> A middle aged female has flaccid bullac in the skin and oral erosion. Histopathology shows intraepidermal acanthololytic blisters. The most likely diagnosis isPemphigus vulgarisParaneoplastic pemphigusBullous pemphigoidDermatitis hepatifOflis  <response>: In pemphigus vulgaris skin involvement stas in the form of flaccid blisters. Cutaneous lesions are usually preceded by blisters and erosions of oral mucosa. HP shows a suprabasal cleft with bulla formation just above the basal layer with a tomb stone appearance and with blister cavity containing acantholytic cells and inflammatory cells.Page no 280,282. Reference IADVLs concise textbook of dermatology 