Erythema dyschromicum perstans: a case report and review

Abstract

Erythema dyschromicum perstans (EDP) is an acquired ashy dermatosis characterized by patches of blue-gray pigmentation over the trunk, extremities, and neck. These pigmentary changes may become chronic and disfiguring. At present, the etiology of EDP remains unclear, and there is no single established therapy. We describe a 21-year-old Hispanic man with extensive patches of EDP who improved with oral corticosteroid therapy.