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
24,328
Moderate
33,166
Mild
21,281
None
9,573
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