What is erythema dyschromicum perstans?
Erythema dyschromicum perstans is also called ashy dermatosis (of Ramirez), because of its colour. It is a benign skin condition characterised by grey, round to oval or irregular patches distributed on the trunk, extremities and face. Early lesions maybe reddish in colour, often with a more pronounced border, and they may be somewhat elevated. However, this phase is not always observed. The patient is otherwise well with no associated disease or blood test abnormality.