Copyright © 2017 American Academy of Pediatrics. From: Group A Streptococcal Infections Red Book® 2015, 2015 Figure Legend: Erythema marginatum in a 12-year-old white female. Although a characteristic rash of rheumatic fever, it is noted in fewer than 3% of cases. Its serpiginous border and evanescent nature serve to distinguish it from erythema migrans lesions of Lyme disease. Copyright Martin G. Myers Date of download: 10/23/2017 Copyright © 2017 American Academy of Pediatrics. All rights reserved.