Muscle fatigue is a symptom that makes it more difficult for a person to move as they usually would. It may involve a dull ache in the muscles. Exercise is a common cause of muscle fatigue. Some ...

In some cases, fatigue and nausea may develop as a result of lifestyle factors, such as difficulty sleeping or lack of exercise. In other cases, they may signal an underlying medical condition that ...

People are often surprised by how fatigued they are during a COVID infection. Fatigue is more than being worn out or sleepy. It’s an excessive tiredness that persists despite resting or good sleep. It ...