RT Book, Section A1 Reyes-Habito, Claire Marie A1 Wanner, Molly A2 Avram, Marc R. A2 Avram, Mathew M. A2 Ratner, Désirée SR Print(0) ID 1175096092 T1 Management of Dyschromias T2 Procedural Dermatology YR 2015 FD 2015 PB McGraw-Hill Education PP New York, NY SN 9780071795067 LK dermatology.mhmedical.com/content.aspx?aid=1175096092 RD 2024/04/19 AB Dyschromia is a broad term used for disorders of pigmentation. Three common pigmentary issues are melasma, postinflammatory hyperpigmentation (PIH), and dermatoheliosis. All are characterized by increased melanin deposition in the skin, although the pathogenesis of each increase is distinct.