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Bullous pemphigoid induced by hydrochlorothiazide therapy.

The most common subepidermal blistering disorder, bullous pemphigoid (BP) typically occurs in the elderly without any obvious inciting event. 1 Anti-basement membrane zone antibodies are typically detected on direct and indirect immunofluorescence studies. 2 A flu-like prodromal phase with a non-specific urticarial dermatitis may herald the development of the more characteristic tense bullae. 3 Obtaining a thorough medication history is important as a number of pharmacological agents have been reported to trigger this same phenomenon. We report a case of generalized BP induced by hydrochlorothiazide therapy in a 32-year-old male.