Bullous pemphigoid (BP) is a rare autoimmune subepithelial blistering disease affecting mostly older adults [1]. Studies have calculated an annual incidence ranging from 2.4% to 21.7% per million population. While triggers are found in less than 15% of cases [2,3], drugs are well-known trigger factors. Recently, dipeptidyl peptidase-4 inhibitors (DPP4i) have been associated to this condition [4]. Our study presents four cases of older adults with BP associated to the use of DPP4i. The relevance of this study is to emphasize the association between these drugs and BP in older adults where polypharmacy is frequent.
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