Chronic fatigue

Key Information

Appropriate Tests

Fatigue is defined as 'pathological' when it lasts more than 6 months and interferes with daily activities.
If no cause can be defined, after appropriate investigation, the condition may be labelled chronic fatigue syndrome.

Investigation should be directed by the findings on history and physical examination, to exclude underlying disease, including Full blood count, Thyroid stimulating hormone, C-Reactive protein, Electrolytes, Liver function tests, Creatinine.

There are no diagnostic tests for chronic fatigue syndrome.

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