Acute arthritis in children.
D000208:Acute Disease; D001168:Arthritis / Q000175:diagnosis*; D001170:Arthritis, Infectious / Q000175:diagnosis; D001171:Arthritis, Juvenile / Q000175:diagnosis; D001424:Bacterial Infections / Q000175:diagnosis; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000175:diagnosis; D008297:Male; D011379:Prognosis; D011693:Purpura / Q000175:diagnosis; D012213:Rheumatic Fever / Q000175:diagnosis; D012409:Rubella / Q000175:diagnosis; D014777:Virus Diseases / Q000175:diagnosis