Extragenital lichen sclerosus et atrophicus.

A 76-year-old woman with a history of eczematous dermatitis presented with a 9-month history of a pruritic, eczematous eruption of the trunk. This eruption responded to topical glucocorticoids but recurred on discontinuation of treatment on multiple occasions. A biopsy specimen showed extragenital lichen sclerosus et atrophicus. The diagnosis of extragenital lichen sclerosus is reviewed with a comparison to classic lichen sclerosus in terms of clinical features, histopathologic characteristics, and treatment approaches.