Juvenile rheumatoid arthritis presenting in the adult as fever of unknown origin.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001168:Arthritis / Q000175:diagnosis; D001171:Arthritis, Juvenile / Q000150:complications / Q000175:diagnosis*; D002648:Child; D005334:Fever / Q000209:etiology*; D005335:Fever of Unknown Origin / Q000175:diagnosis; D005500:Follow-Up Studies; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis; D008206:Lymphatic Diseases / Q000175:diagnosis; D008297:Male; D010493:Pericarditis / Q000175:diagnosis; D011014:Pneumonia / Q000175:diagnosis; D012737:Sex Factors; D012877:Skin Manifestations; D013163:Splenomegaly / Q000175:diagnosis; D013997:Time Factors