====== EDP (skin abnormality) ======

>Erythema dyschromicum perstans (EDP) is a form of acquired dermal macular hyperpigmentation characterised by well-circumscribed round to oval or irregular patches on the face, neck and trunk that are grey in colour. It is a form of acquired dermal macular hyperpigmentation. Erythema dyschromicum perstans is also called ashy dermatosis (of Ramirez), because of its colour.
>\\ [source link below]

It can affect people of any age, but appears to be more frequent in young adults. Women are affected more often than men.

The cause of EDP is unknown -  suggestions include the effects of  : genetic susceptibility, contact allergy to cosmetics and hair dye, toxic effects of chemicals, whipworm infestation, viral infections and the adverse effect of drugs and medications.

Further info [[https://dermnetnz.org/topics/erythema-dyschromicum-perstans/|DermNetz, NZ]]