Snapshot A 2-year-old child presents to the pediatrician’s office for a rash. Her mother is against vaccines, so the child had not received any childhood vaccines. Her father, however, is worried about her lack of vaccination and asks the doctor if this is measles or rubella. On physical exam, she has a high fever as well as a confluent maculopapular rash. She also has blue-white spots on her buccal mucosa. The family is instructed to take isolation precautions and to bring in the child’s siblings who are also unvaccinated. Introduction Classification login to view 5 more bullets Prevention login to view 2 more bullets Epidemiology Incidence login to view 2 more bullets Demographics login to view 1 more bullet Risk factors login to view 2 more bullets ETIOLOGY Pathogenesis login to view 5 more bullets Presentation Symptoms login to view 6 more bullets Physical exam login to view 8 more bullets Studies Labs login to view 2 more bullets Biopsy of lymph node login to view 1 more bullet Differential Drug reaction login to view 3 more bullets Parvovirus B19 infection login to view 3 more bullets DIAGNOSIS Making the diagnosis login to view 1 more bullet Treatment Management approach login to view 1 more bullet Conservative login to view 7 more bullets Medical login to view 3 more bullets Complications Subacute sclerosing panencephalitis login to view 6 more bullets Encephalitis Giant cell pneumonia login to view 1 more bullet Prognosis Prodrome followed by rash