A 50-year-old male known case of myasthenia with erythema shallow erosions with few blisters and scales. Oral mucosa is not involved immunopathology demonstrates IgG deposition on keratinocytes and autoantibodies against Dsg – 1. The diagnosis is –
Pemphigus vulgaris Bullous pemphigoid Pemphigus foliaceous Dermatitis herpetiformis