TY - CHAP M1 - Book, Section TI - Measles A1 - Shah, Ashish A1 - Sobolewski, Brad A1 - Mittiga, Matthew R. A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason Y1 - 2021 N1 - T2 - The Atlas of Emergency Medicine, 5e AB - Measles presents as an acute febrile illness with a 3- to 4-day prodromal period characterized initially by fever, malaise, and anorexia, followed closely by conjunctivitis, coryza, and cough. Koplik spots, the pathognomonic enanthem of measles, appear as 1- to 3-mm red papules with gray-white centers on the buccal mucosa. They usually present transiently approximately 48 hours before the development of the characteristic erythematous blanching maculopapular rash. The rash appears on day 3 or 4 after the onset of fever as dark red to purple macules and papules on the forehead, around the hairline, and behind the earlobes, subsequently spreading in a cephalocaudad progression, often becoming confluent. The lesions tend to fade in the same order that they appear. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/03/28 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181044355 ER -