title: Polyarthritis: the differential diagnosis of rheumatoid arthritis.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001170:Arthritis, Infectious / Q000175:diagnosis; D016918:Arthritis, Reactive / Q000175:diagnosis; D001172:Arthritis, Rheumatoid / Q000175:diagnosis*; D001528:Behcet Syndrome / Q000175:diagnosis; D002648:Child; D002675:Child, Preschool; D003093:Colitis, Ulcerative / Q000175:diagnosis; D003095:Collagen Diseases / Q000175:diagnosis; D003424:Crohn Disease / Q000175:diagnosis; D003937:Diagnosis, Differential; D004697:Endocarditis, Bacterial / Q000175:diagnosis; D004700:Endocrine System Diseases / Q000175:diagnosis; D005260:Female; D006073:Gout / Q000175:diagnosis; D006801:Humans; D008297:Male; D008875:Middle Aged; D009101:Multiple Myeloma / Q000175:diagnosis; D009369:Neoplasms / Q000175:diagnosis; D010003:Osteoarthritis / Q000175:diagnosis; D010005:Osteoarthropathy, Secondary Hypertrophic / Q000175:diagnosis; D012507:Sarcoidosis / Q000175:diagnosis