Lichen planus verrucosus in an association with vitiligo

Abstract

Lichen planus (LP) is a chronic inflammatory disease with characteristic skin lesions and histological findings. Hypertrophic lichen planus, also known as lichen planus verrucosus, is a subtype of lichen planus. Lichen planus verrucosus is clinically characterized by pruritic symmetric hyperkeratotic plaques of red, yellow-gray, red-brown or purplish-grey colour, usually located on the pretibial or perimalleolar areas, less often on the arms or trunk. Lichen planus affects about 0.5-1% of the population. Hypertrophic lichen planus is a less common form of lichen planus. It accounts for 4.7% of lichen planus cases. The disease has a chronic course, and it is often resistant to local and systemic treatment. This article describes a rare lichen planus verrucosus form in association with vitiligo.