Fatigue is an entirely normal condition with which everybody is familiar.


Fatigue is an entirely normal condition with which everybody is familiar. For example, you can be tired in the evening after a hectic day, feeling weak and listless and lacking in concentration. If, however, fatigue becomes a chronic condition, also during the day, this could be a sign of a physical or psychological disease and should be treated by a doctor. See also "chronic fatigue"


  • State of weakness and listlessness
  • Reduced attentiveness/concentration
  • Reduced performance capacity

Causes and treatment


  • Lack of sleep
  • Unsatisfied need for sleep
  • Physical exertion
  • Mental exertion (e.g. studying, working in the office)
  • Causes of constant fatigue: see "chronic fatigue"

Further treatment by your doctor / in hospital

Possible tests
  • Physical examination
  • Blood test
Possible therapies
  • Treatment for an underlying disease, if any
  • Lifestyle changes (see “What I can do myself”)

What can I do myself?

Lifestyle changes

  • Changes to sleeping habits
  • A balanced and varied diet
  • Avoidance of nicotine and alcohol
  • Regular exercise and sport
  • Combating stress through regular periods of rest and relaxation

When to see a doctor?


fatigue, tiredness

Exclusion of liability

CSS offers no guarantee for the accuracy and completeness of the information. The information published is no substitute for professional advice from a doctor or pharmacist.

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