Erythema dyschromicum perstans


Erythema dyschromicum perstans

Christine Soon and John Berth-Jones

Evidence Levels:  A Double-blind study  B Clinical trial ≥ 20 subjects  C Clinical trial < 20 subjects  D Series ≥ 5 subjects  E Anecdotal case reports


Erythema dyschromicum perstans (EDP) is an acquired, generalized dermal hypermelanosis of unknown etiology. Clinically it presents as asymptomatic, ashen-gray-blue macules of varying sizes, most commonly on the trunk and proximal extremities. Variable components include erythema and papulation. It has been reported most frequently in dark-skinned Latin-American people, although all racial groups can be affected. EDP has similarities to lichen planus pigmentosus and the ‘ashy dermatosis’ of Ramirez, although the precise relationship of these conditions has yet to be established.

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Aug 7, 2016 | Posted by in Dermatology | Comments Off on Erythema dyschromicum perstans

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