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What is fatigue?

Fatigue is characterized by continued physical or mental activity + diminished ability to do work + subjective feeling of tiredness.

Cognitive function

  • Decreased concentration
  • Forgetfulness
  • Decline in working memory
  • Errors of omission
  • Reduced problem solving skills

Motor function

  • Slowed reaction time
  • Decreased fine motor skills and function

Altered mood

  • Depression
  • Apathy
  • Anxiety
  • Confusion

Negative physical health effects

  • Hypertension
  • Diabetes
  • Obesity
  • Myocardial infarction
  • Stroke

Socio-psychological associations

  • Poor communication
  • Increased smoking and alcohol consumption
  • Use of sleep pills, tranquilizers
  • Family and marital discord
  • Diminished sex desire
  • Increase number of accidents, motor vehicle and work related

Contributing factors to fatigue

  • Job stress
  • Shift work
  • Non work responsibilities ( child care, elder care)
  • Workload
  • Sleep disorders
  • Age
  • Medications
  • Alcohol




Sleep Center