“…Dear Editor, Lichen planus (LP) is characterized by hyperkeratotic polygonal papules and plaques on skin surface and mucosae, and can be classified into several clinical subtypes including blistering variants, such as bullous LP (BLP) and LP pemphigoides (LPP). 1,2 While the former presents vesicles or blisters limited to preceding LP lesions, the latter is characterized by coincidence of LP lesions and LP-independent blistering lesions induced by an autoimmune mechanism against hemidesmosomal protein, such as BP180. Here, we report a case of BLP concomitant with elevation of serum anti-BP180 autoantibody.…”