title: Erythema migrans.
abstract: Erythema migrans (EM) is the most common objective manifestation of Lyme disease, accounting for about 90% of cases. Establishing the diagnosis of EM is important because appropriate treatment with oral antibiotics at an early stage of infection with Borrelia burgdorferi results in excellent outcomes. This article includes a discussion of the epidemiology of EM and its clinical, differential, and laboratory diagnosis. The treatment of EM and the prevention of Lyme disease are also discussed.
authors.affiliation: Division of Infectious Diseases, Department of Medicine, New York Medical College, Valhalla, NY 10595, USA.
authors.forename: Patricia
authors.initials: P
authors.lastname: Dandache
authors.forename: Robert B
authors.initials: RB
authors.lastname: Nadelman
mesh_terms: D000818:Animals; D001096:Arachnid Vectors / Q000382:microbiology; D001733:Bites and Stings / Q000150:complications / Q000517:prevention & control; D003937:Diagnosis, Differential; D015787:Erythema Chronicum Migrans / Q000175:diagnosis / Q000188:drug therapy / Q000453:epidemiology / Q000266:history; D049673:History, 20th Century; D006801:Humans; D013987:Ticks / Q000382:microbiology