noun
chronic fatigue syndrome; CFS
Medical term for a complex disorder characterized by extreme fatigue that doesn't improve with rest.
慢性疲労症候群は、日常生活に大きな影響を与えることがあります。
Chronic fatigue syndrome can significantly affect daily life.
Compound of 慢性 (chronic), 疲労 (fatigue), and 症候群 (syndrome).