Acute polyarthritis and infectious mononucleosis.
D000208:Acute Disease; D000293:Adolescent; D001170:Arthritis, Infectious / Q000175:diagnosis / Q000209:etiology*; D003937:Diagnosis, Differential; D006801:Humans; D007244:Infectious Mononucleosis / Q000150:complications* / Q000175:diagnosis; D008297:Male