What are the 4 types of fatigue?

Fatigue is mainly divided into four types: physical fatigue, mental fatigue, psychological fatigue, and pathological fatigue. Physical fatigue is usually caused by excessive physical activity, characterized by muscle soreness and weakness, commonly seen in heavy manual laborers or athletes, and can be relieved through rest and electrolyte supplementation. Mental fatigue results from prolonged overuse of the brain, marked by scattered attention and slow thinking, mostly affecting students or mental workers; It is best to improve it through aerobic exercise and sufficient sleep. Psychological fatigue stems from long-term emotional stress, manifesting as reduced interest and low mood, which requires adjustment through psychological intervention or antidepressant medications. Pathological fatigue is related to diseases such as infections or endocrine abnormalities, with the characteristic of persistence, and requires treatment targeting the underlying disease. If fatigue persists without relief or is accompanied by other abnormal manifestations, medical attention should be sought promptly to screen for potential diseases.