title: Reactive arthritis.
mesh_terms: D000328:Adult; D001170:Arthritis, Infectious / Q000175:diagnosis / Q000209:etiology*; D016918:Arthritis, Reactive / Q000175:diagnosis; D002006:Brucellosis / Q000150:complications; D006069:Gonorrhea / Q000150:complications; D006801:Humans; D008297:Male; D008875:Middle Aged; D012480:Salmonella Infections / Q000150:complications; D015009:Yersinia Infections / Q000150:complications