Lichen planus pemphigoides associated with chronic hepatitis B virus infection

S H Jang, S J Yun, S C Lee, J B Lee
Clinical and Experimental Dermatology 2015, 40 (8): 868-71
Lichen planus pemphigoides (LPP) is a rare autoimmune dermatosis with the features of both lichen planus (LP) and bullous pemphigoid (BP). Although in rare cases, LPP has been associated with several medications and conditions, it is generally considered an idiopathic disorder, and its pathogenesis remains uncertain. We report a 56-year-old woman who presented with a 2-year history of flat-topped, polygonal, violaceous-colored papules and some bullae. She was diagnosed with chronic hepatitis B virus (HBV) infection, which had been treated intermittently with entecavir. Histopathological examination showed the typical features of LP with subepidermal blisters, and with linear deposits of IgG along the basement membrane zone on direct immunofluorescence. Immunoblotting revealed antibodies directed at the BP180 and BP230 antigens. We diagnosed the patient with LPP, and treated the condition with systemic steroids and dapsone. To our knowledge, this is the first report of LPP in a patient with chronic HBV infection.

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