Hypertrophic Lichen Planus

Abstract

Hypertrophic Lichen Planus is a chronic, treatment‑resistant inflammatory disease. Its clinical manifestations are characterized by thickened, hyperkeratotic cutaneous plaques of long‑standing evolution, with a verrucous surface and a violaceous to dark brown coloration. Intense pruritus is typically present throughout the course of the disease. The lesions most commonly localize to the lower extremities, particularly on the anterior aspect of the legs. The condition follows a chronic course with a tendency toward recurrence and post‑inflammatory hyperpigmentation, as illustrated in the case presented below. We report the case of a 47‑year‑old patient with no significant past medical history, who developed pruritic lesions on the lower extremities that progressed to hyperkeratotic plaques despite initial treatment with topical corticosteroid creams and oral anti‑inflammatory agents. A biopsy was subsequently performed, yielding a histopathological diagnosis of hypertrophic lichen planus.