Fatigue is a feeling of weariness, tiredness, or lack of energy. It is different from drowsiness which is feeling the need to sleep, while fatigue is a lack of energy and motivation. Drowsiness and apathy (a feeling of indifference or not caring about what happens) can be symptoms of fatigue.

Symptom severities
Severe
26,417
Moderate
36,292
Mild
23,234
None
10,399
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