title: Infective arthritis due to Blastocystis hominis.
abstract: A patient with rheumatoid arthritis taking prednisone developed Blastocystis hominis acute diarrhoea, which was associated with increased inflammation and effusion of the left knee. B hominis organisms were found in synovial fluid from the left knee. The patient responded dramatically to metronidazole treatment. B hominis may become disseminated in immunosuppressed patients with diarrhoea and may cause infective arthritis.
authors.affiliation: Department of Medicine, University Hospital, Kingston, Jamaica.
authors.forename: M G
authors.initials: MG
authors.lastname: Lee
authors.forename: S C
authors.initials: SC
authors.lastname: Rawlins
authors.forename: M
authors.initials: M
authors.lastname: Didier
authors.forename: K
authors.initials: K
authors.lastname: DeCeulaer
mesh_terms: D000328:Adult; D001170:Arthritis, Infectious / Q000150:complications* / Q000188:drug therapy / Q000469:parasitology; D001172:Arthritis, Rheumatoid / Q000150:complications*; D005260:Female; D006801:Humans; D007411:Intestinal Diseases, Parasitic / Q000150:complications* / Q000188:drug therapy; D007719:Knee Joint / Q000469:parasitology; D008795:Metronidazole / Q000627:therapeutic use; D011528:Protozoan Infections / Q000150:complications* / Q000188:drug therapy / Q000469:parasitology; D013582:Synovial Fluid / Q000469:parasitology
chemical_list: D008795:Metronidazole