title: Sleep disturbances, fibromyalgia and primary Sjögren's syndrome.
abstract: OBJECTIVE
  To investigate the association and prevalence of sleep disturbances and fibromyalgia (FM) in a group of patients with primary Sjögren's syndrome (pSS).
  
  
  METHODS
  Sixty-five patients with pSS were investigated. A 10-point Mini Sleep Questionnaire (MSQ) was completed focusing on sleep complaints. The same questionnaire was also used in three control groups: Group A-67 patients with rheumatoid arthritis. Group B-53 patients with rheumatoid arthritis (RA) and sicca symptoms; Group C-31 patients with osteoarthritis. All patients with pSS were also studied fro the presence of FM.
  
  
  RESULTS
  Moderate or severe sleep disturbances were reported by 49 out of 65 pSS patients (75%). This frequency was significantly higher than that reported by patients in the three control groups (p < 0.001). FM was present in 36 out of 65 pSS patients (55%) and was associated with sleep disturbances. FM or sleep disturbances were not associated with any clinical or laboratory parameters.
  
  
  CONCLUSIONS
  Our results suggest that sleep abnormalities and FM in pSS patients are frequent and their etiology might involve other mechanisms besides joint pain or sicca symptomatology.
authors.affiliation: Department of Rheumatology, Ichilov Hospital, Tel Aviv, Israel.
authors.forename: M
authors.initials: M
authors.lastname: Tishler
authors.forename: Y
authors.initials: Y
authors.lastname: Barak
authors.forename: D
authors.initials: D
authors.lastname: Paran
authors.forename: M
authors.initials: M
authors.lastname: Yaron
mesh_terms: D000368:Aged; D001172:Arthritis, Rheumatoid / Q000150:complications; D005260:Female; D005356:Fibromyalgia / Q000150:complications* / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000150:complications; D015995:Prevalence; D012859:Sjogren's Syndrome / Q000150:complications*; D012893:Sleep Wake Disorders / Q000150:complications* / Q000453:epidemiology*; D011795:Surveys and Questionnaires