Zosteriform Lichen Planus as the Presenting Feature of Generalized Lichen Planus;a Case Report

A 40-year-old man was visited at our clinic with a history of pruritic cutaneous papules in a zosteriform pattern from 3 months ago. the skin lesions were located unilaterally on the right side of his thorax. on examination, there were multiple shiny, erythematous, violaceous and slightly scaly papules limited to right t7 dermatome (figure.1). general physical examination was unremarkable and mucous membranes were intact. a biopsy was taken and the specimen exhibited hyperkeratosis, focal increases in the granular cell layer, and irregular acanthosis with a saw tooth appearance, liquefactive degeneration of the basal cell layer and a band-like lymphocytic infiltrate at the dermo-epidermal junction and a number of civatte bodies. he was treated with potent topical steroids. after 2 months, he came back with generalized lesions and typical mucosal lesions. this time, he was treated with systemic steroids. after 2 months, pruritus subsided and post inflammatory hyperpigmentation was formed, but mucosal lesions persisted.