By Gary M. White, MD
Hypertrophic lichen planus (HLP) is a variant of lichen planus (LP) in which the skin lesions become thickened and hyperkeratotic.
Hyperkeratotic or verrucous nodules and plaques are characteristic, most commonly on the legs. Extremely rarely, malignant change may occur (see reference below).
The standard therapies for LP may be given. Scratching should be discouraged to prevent the similar changes of lichen simplex chronicus. A potent topical steroid ointment BID is usually necessary. For individual problematic lesions, intralesional triamcinalone 5-10 mg/cc may be given. A topical steroid-impregnated tape may be helpful (e.g. Cordran). Any growing, resistant area should be biopsied.
Malignant transformation of lichen planus hypertrophicus into squamous cell carcinoma. Indian J Paediatr Dermatol 2016;17:18-20
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