pemphigus drug-induced pemphigus biologic therapy-induced pemphigus amoxicillin/clavulanic acid-induced pemphigus vulgaris https://emedicine.medscape.com/article/1063684-overview drug-triggered pemphigus Pemphigus is an autoimmune bullous disease characterized by blisters and erosions of the skin and mucous membranes. Several variants of the disease exist, including pemphigus vulgaris, pemphigus foliaceous, and drug-induced pemphigus. Patients with drug-induced pemphigus have autoantibodies that are either circulating or tissue bound. drug-related pemphigus bucillamine-induced pemphigus foliaceus drug-induced pemphigoid pemphigus herpetiformis-type drug reaction