noun
feeling of fatigue; tiredness; fatigability
Refers to the subjective sensation of being tired or exhausted, often used in medical or everyday contexts.
最近、疲労感が取れない。
Lately, I can't shake this feeling of fatigue.
この薬の副作用として疲労感が出ることがあります。
This medicine may cause a feeling of tiredness as a side effect.
倦怠感 is a more formal or medical term for malaise or lassitude, often implying a heavier, more systemic weariness than 疲労感.
Compound of 疲労 (hirō, 'fatigue') and 感 (kan, 'feeling, sensation').