LICHEN-PLANUS AND LICHEN-SCLEROSUS OVERLAP

Lichen planus and lichen sclerosus share several common features, incl uding lymphocytic infiltration at the dermal-epidermal junction, clini cal involvement of both skin and mucosa, erosive disease of mucosal su rfaces, and the occasional occurrence of squamous cell carcinoma at th e site of chronic, erosive mucosal lesions. In spite of these similari ties, there are remarkably few reports of patients who concurrently ha ve evidence of both diseases. We report a patient who had oral lesions of lichen planus and penile lesions of lichen sclerosus and we review possible mechanisms to explain this association.