Generalized weakness and dizziness can be caused by physiological and pathological reasons (such as hypoglycemia, insufficient cerebral blood supply, and vegetative nerve dysfunction, etc.). 1. Physiological causes: Over fatigue, poor sleep and other conditions can lead to generalized weakness and dizziness. It may get better after resting and can be observed for the time being. 2. Pathologic causes: (1) Hypoglycemia: it may be related to insufficient sugar intake, hypoglycemic attack in diabetic patients, etc. Common symptoms include pallor, palpitation, and sweating, etc. Generalized weakness and dizziness may also occur. (2) Insufficient blood supply to the brain: insufficient blood supply to the cerebral arteries leads to dysfunction of the brain cells, resulting in generalized weakness and dizziness. (3) Plant nerve dysfunction: lack of sleep, stress, tension, anxiety, etc. can cause nerve dysfunction, resulting in generalized weakness and drowsiness, which can be improved by improving sleep and relieving stress. It is recommended that patients with generalized weakness and dizziness go to the hospital in time.