Keratosis pilaris atrophicans: treatment with intense pulsed light in four patients.

Background: Keratosis pilaris atrophicans (KPA) is a group of disorders characterized by erythematous keratotic papules followed by atrophy on the face. The treatment is often unsatisfactory.

Methods: Four white women, with ages ranging from 14 to 20 years, were treated with an intense pulsed light (IPL) system with a cut filter of 570 nm.