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Updated: May 9, 2026

Precision Implementation of Minimal Erythema Dose (MED) Testing to Assess Individual Variation in Human Inflammatory Response
Published on: October 3, 2019
Erythema dyschromicum perstans in a Caucasian pediatric patient
Alison M Tisack1, Richard H Huggins, Henry W Lim
1Department of Dermatology, Henry Ford Hospital, Detroit, MI, USA.
Abstract:
Erythema dyschromicum perstans (EDP), or ashy dermatosis, is characterized by oval, blue-gray macules, which are completely asymptomatic. In adults, the condition is primarily seen in patients of color, most commonly those of Hispanic descent, and typically follows a chronic course. We describe a pediatric case of EDP in a Caucasian patient. In the pediatric population, EDP is more commonly observed in Caucasian patients and often shows significant recovery or complete resolution in a matter of years. This case report outlines the differences in EDP between adult and pediatric patients.
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