Overview
Post-inflammatory hyperpigmentation is seen here in a mottled pattern, over the posterior shoulder. Hemosiderin, left behind by degraded RBC's, creates the discoloration.
Review Date 6/3/2025
Updated by: Ramin Fathi, MD, FAAD, Director, Phoenix Surgical Dermatology Group, Phoenix, AZ. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.