A Case of Acquired and Localized Hypertrichosis Associated with Chronic Erythema Nodosum

Kim, Minjoong; Cho, Hee Ryung; Sim, Woo Young; Lew, Bark Lynn

Abstract

Chronic erythema nodosum, a variant of erythema nodosum, is characterized by the presence of non-ulcerated lesions located mainly on the legs and by a lack of a migratory tendency. These lesions can persist for years. Hypertrichosis is defined as the excessive growth of hairs and is classified into generalized or localized forms. An acquired and localized hypertrichosis has been associated with Becker's nevus, pretibial myxedema, local inflammation or irritation, orthopedic casts and splints, and topical application of steroids. A 48-year-old Korean female visited our clinic for evaluation of a 2-year history of scattered, erythematous to brownish, tender patches or subcutaneous nodules on both shins. Her skin lesions had waxed and waned under treatment, and after 6 months localized hypertrichosis had appeared on her skin lesions. We report a case of acquired and localized hypertrichosis associated with chronic erythema nodosum.