Lichen Spinulosus: Case Report and Review of Literatures

摘要

Lichen Spinulosus is a rare childhood disease. It is characterized by follicular hyperkeratotic papules that may coalesce into plaques. Individual lesion shows conical projection, hair like horny spine. The etiology is unknown but genetic predisposition has been suggested as a possible cause. It has a tendency to disappear spontaneously at puberty. Herein we present a 12-year-old boy presented with 6- month- history of persistent asymptomatic skin lesions. Skin examinations revealed multiple grouped scaly, hypopigmented tiny follicular papules with horny spines on his back. Soles showed planter keratoderma. Skin biopsy showed dilated hair follicle filled with keratin plugging. Diagnosis of LS associated with planter keratoderma was made. The patient responded well to topical lactic acid (12%), urea (20-30%), and betamethasone valerate (0.1%) preparations.