Snapshot A 4-year-old boy presents to the emergency room for fevers and swollen jaw. He had recently gone to Disneyland with classmates. His family had been among several who were against vaccinations, and so he had not received regular vaccines since birth. He only received the first dose of the measles, mumps, and rubella vaccine. On physical exam, he has a low-grade fever and bilateral swollen parotid glands that are tender to palpation. Introduction Classification login to view 7 more bullets Epidemiology login to view 10 more bullets Pathogenesis login to view 4 more bullets Prevention login to view 2 more bullets Prognosis login to view 1 more bullet Presentation Symptoms login to view 9 more bullets Physical exam login to view 6 more bullets Studies Labs login to view 2 more bullets Making the diagnosis login to view 1 more bullet Differential Epstein-Barr virus login to view 2 more bullets Treatment Management approach login to view 1 more bullet Conservative login to view 7 more bullets Complications Sterility in males who have orchitis after puberty Sensorineural deafness