RT Book, Section A1 Kasper, Dennis L. A1 Fauci, Anthony S. A1 Hauser, Stephen L. A1 Longo, Dan L. A1 Jameson, J. Larry A1 Loscalzo, Joseph SR Print(0) ID 1128788294 T1 Multiple Sclerosis T2 Harrison's Manual of Medicine, 19e YR 2016 FD 2016 PB McGraw-Hill Education PP New York, NY SN 9780071828529 LK accessmedicine.mhmedical.com/content.aspx?aid=1128788294 RD 2024/04/19 AB Characterized by chronic inflammation and selective destruction of CNS myelin; peripheral nervous system is spared. Pathologically, the multifocal scarred lesions of multiple sclerosis (MS) are termed plaques. Etiology is autoimmune, with susceptibility determined by genetic and environmental factors. MS affects >350,000 in the United States and 2.5 million worldwide; onset is often in early to middle adulthood, and women are affected three times as often as men.