Abstract
BackgroundMucous membrane pemphigoid (MMP) is an autoimmune blistering disease (AIBD). Some reports suggest that it has a drug-related pathogenesis especially anti-hypertensive drug.Case presentationA 67-year-old man with a 7-year history of essential hypertension was prescribed enalapril maleate for 5 months. He presented at our department with pain, ulcers, and blisters on the oral mucosa. We performed clinical, histopathology, and direct immunofluorescence examinations, and findings were consistent with the diagnostic criteria for MMP. Consequently, we consulted with the cardiovascular physician and agreed to discontinue the enalapril maleate replacing it with irbesartan/hydrochlorothiazide tablets and topical corticosteroid therapies instead. The lesions healed without recurrence.ConclusionsABID induced by antihypertensive drugs have been reported, and enalapril maleate has been implicated as an antihypertensive agent that may trigger AIBDs, such as MMP. This case highlights the potential relationship between antihypertensive drugs and MMP, of which clinicians should be aware to accurately diagnose and promptly relieve patients’ pain.
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