title: The prevalence and associations of fatigue in systemic lupus erythematosus.
abstract: OBJECTIVE
  This study assessed the prevalence and associations of fatigue in systemic lupus erythematosus (SLE).
  
  
  METHODS
  Questionnaires were used to measure self-reported fatigue, disease activity, sleep quality, quality of life, anxiety and depression in 120 out-patients with SLE.
  
  
  RESULTS
  Abnormal fatigue was reported by 97 (81%) patients, and 71 (60%) patients reported poor sleep quality. Fatigue correlated negatively with all measures of functioning. Fatigue scores were up to 33% higher in patients with active disease [Systemic Lupus Activity Measure (SLAM >/=3)] than in patients with inactive disease (SLAM >3) (P: < 0.05). There were significant correlations between fatigue and disease activity, sleep quality, anxiety and depression.
  
  
  CONCLUSIONS
  Fatigue is a common complaint of patients with SLE and is associated with diminished ability to function. Apart from treating the primary disease, it may also be worthwhile to treat mood disorders and insomnia in order to reduce fatigue and improve quality of life.
authors.affiliation: Bone and Joint Research Unit and. Department of Psychological Medicine, St Bartholomew's and The Royal London School of Medicine and Dentistry, London, UK.
authors.forename: C M
authors.initials: CM
authors.lastname: Tench
authors.forename: I
authors.initials: I
authors.lastname: McCurdie
authors.forename: P D
authors.initials: PD
authors.lastname: White
authors.forename: D P
authors.initials: DP
authors.lastname: D'Cruz
mesh_terms: D000328:Adult; D000339:Affect; D001007:Anxiety / Q000453:epidemiology / Q000523:psychology; D003863:Depression / Q000453:epidemiology / Q000523:psychology; D005221:Fatigue / Q000453:epidemiology* / Q000523:psychology; D005260:Female; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000453:epidemiology* / Q000523:psychology; D008875:Middle Aged; D015995:Prevalence; D011788:Quality of Life; D012720:Severity of Illness Index; D012893:Sleep Wake Disorders / Q000453:epidemiology / Q000523:psychology