A 40-year male presenting with painful flaccid vesicles on the face and oral mucosa with asymmetric distribution. Immunofluorescence shows intercellular IgG deposition in the epidermis. Diagnosis is –

In this patient (go stepwise) No itching Pain present (only two differentials, i.e. pemphigus and herpes zoster) Flaccid vesicles on face Mucosal involvement Asymmetric distribution Intercellular IgG in the epidermis Diagnosis is pemphigus vulgaris