Erythema dyschromicum perstans in phototype II women: three unusual clinical cases studied with electron microscopy.

摘要

Erythema dyschromicum perstans (ashy dermatosis) is a condition of unknown etiology and pathogenesis. It is a chronic skin disorder, characterized by asymptomatic hyperpigmented macules of various sizes on the face, trunk and extremities. It typically occurs in the second decade of life and generally affects those with phototype IV skin. The age range affected is wide, in both Latin America and around the world [1]. We report our experience of three Caucasian patients, phototype II, affected by this pathology. All the patients presented numerous gray-blue-colored macules, extending over the trunk, back, neck, forehead, cheeks or extremities (figure 1E).