Treatment of lichen planus.

Lichen planus is an inflammatory pruritic dermatosis in which T lymphocytes attack the basal epidermis, producing characteristic clinical and histological lesions. Mild cases can be treated successfully with rest, topical corticosteroids with or without wet dressings, or occlusion. Severe generalised cases may require systemic corticosteroids. Chronic, aggressive lesions may need additional therapy ranging from psoralen plus ultraviolet A (PUVA) to retinoids or cyclosporin. Complications ranging from infectious, bullous disease or ulceration require special treatment considerations.