Chronic Fatigue Syndrome: Causes, Symptoms and Diagnosis

Extreme fatigue and muscle aches can stem from various sources, including CNS fatigue or chronic mono. Proper diagnosis for children and adults is the first step toward managing persistent exhaustion.

Asian female doctor sitting at table leaning head on hand

Causes of Fatigue and Nausea

Published Aug,14 2017 | By Norene Anderson

Fatigue is a feeling of exhaustion and weariness that does not go away with rest. Fatigue is not drowsiness that responds to a good night's sleep. Nausea is the feeling of sickness or discomfort in the stomach that produces the urge to vomit.