Bullous pemphigoid (BP) is an autoimmune blistering disorder characterized by tense vesicles and bullae, primarily affecting the elderly. It results from autoantibodies targeting hemidesmosomal proteins BP180 and BP230, leading to subepidermal blistering. BP often presents with widespread pruritic plaques and blisters on flexural surfaces, and mucosal involvement is rare. While BP typically occurs spontaneously, certain medications, such as linagliptin, have been implicated as triggers. Early diagnosis and treatment with systemic corticosteroids or immunosuppressive agents can significantly reduce morbidity.