The measurement of fatigue: a new instrument

J Psychosom Res. 1993 Oct;37(7):753-62. doi: 10.1016/0022-3999(93)90104-n.


Fatigue is a frequent medical symptom which has not been routinely measured. We present a 29-item fatigue assessment instrument, describe its psychometric properties, and use it to differentiate normal fatigue from fatigue related medical disorders. Differences in fatigue across a variety of medical disorders, the reproducibility of the fatigue instrument, and its convergent validity with other fatigue measures are also described.

MeSH terms

  • Depressive Disorder / complications
  • Depressive Disorder / psychology
  • Factor Analysis, Statistical
  • Fatigue / etiology
  • Fatigue / psychology*
  • Fatigue Syndrome, Chronic / diagnosis
  • Fatigue Syndrome, Chronic / psychology
  • Humans
  • Lupus Erythematosus, Systemic / complications
  • Lupus Erythematosus, Systemic / psychology
  • Lyme Disease / complications
  • Lyme Disease / psychology
  • Multiple Sclerosis / complications
  • Multiple Sclerosis / psychology
  • Reproducibility of Results
  • Severity of Illness Index
  • Sick Role*