Erythema dyschromicum perstans (EDP), also known as ashy dermatosis, is an acquired pigmentary disorder characterized by the development of asymptomatic, blue-gray macules on the trunk and extremities. The etiology remains unclear, and it predominantly affects individuals with darker skin tones. This clinical vignette on EDP aims to guide residents in recognizing and diagnosing this pigmentary condition. Through this case, users will learn about the clinical features of EDP, its differential diagnosis, and appropriate diagnostic and management strategies.

This vignette is an excellent resource for residents preparing for OSCE-style examinations and can also be used as a self-directed learning tool for healthcare professionals seeking to enhance their knowledge and skills in managing EDP.

We invite you to explore the associated learning module and quizzes to reinforce your knowledge and test your understanding of this important topic.

1. Bolognia, J., Schaffer, J. V., & Cerroni, L. (2018). Dermatology (4th ed.). Philadelphia, PA: Elsevier