Clinical syndrome of unknown origin characterized by a progressive bluish to ash-grey hyperpigmentation. Macules in varying shades of grey with a slightly raised erythematous margin occur mainly on the face, trunk, and upper limbs. The lesions tend to coalesce. This disorder is persistent but asymptomatic.
Erythema Dyschromicum Perstans, Ashy Dermatosis
Ashy dermatosis of Ramirez, Erythema dyschromicum perstans