Hyperkeratosis lenticularis perstans (Flegel's disease) - successful treatment with topical corticosteroids.

Flegel's disease, also known as hyperkeratosis lenticularis perstans, is a rare skin disease characterized by small, red-brown, hyperkeratotic, papules that are usually located on the lower extremities. The diagnosis is based on the clinical appearance in association with the typical histologic features of orthohyperkeratosis and a subepidermal band-like infiltrate. Treatment is difficult and rarely fully effective. We report on a woman with Flegel's disease who responded to a topical corticosteroid therapy with betamethasone dipropionate.