Bullous pemphigoid induced by hydrochlorothiazide therapy

Area of Science:

• Dermatology
• Immunology

Background:

• Bullous pemphigoid (BP) is the most common autoimmune subepidermal blistering disease.
• It typically affects the elderly, often without a clear trigger.
• Diagnosis involves detecting anti-basement membrane zone antibodies via immunofluorescence.

Observation:

• A prodromal flu-like illness and urticarial dermatitis can precede blister formation.
• Medication history is crucial, as certain drugs can induce BP.
• This report details a generalized BP case in a 32-year-old male.

Findings:

• Generalized bullous pemphigoid was induced by hydrochlorothiazide therapy.
• This demonstrates a drug-induced etiology in a younger patient population.
• The case underscores the importance of considering iatrogenic causes for BP.

Implications:

• Highlights hydrochlorothiazide as a potential trigger for bullous pemphigoid.
• Suggests that bullous pemphigoid can occur in younger individuals due to medication.
• Emphasizes the need for vigilant medication review in BP diagnosis and management.