What causes sudden dizziness and falling down?

　　In general, sudden dizziness and falling may be caused by excessive fatigue, changes in body position, hypoglycemia, hypertension, arrhythmia, and other factors. Symptomatic management usually involves general treatment and medication. If discomfort occurs, it is recommended to seek medical treatment promptly. Detailed analysis is as follows:

　　1. Excessive Fatigue

　　Excessive fatigue consumes significant energy, accelerating blood circulation to supply more oxygen and nutrients. However, if cerebral blood supply cannot keep up, dizziness may occur, possibly accompanied by symptoms like physical fatigue and difficulty concentrating. It is recommended to rest appropriately, adjust sleep schedules, avoid prolonged continuous work, and ensure sufficient sleep.

　　2. Postural Changes

　　When body position changes, if the blood pressure regulation mechanism fails to adapt promptly, cerebral perfusion may become insufficient, causing dizziness. This dizziness is usually brief and may be accompanied by visual darkening. One should generally avoid sudden postural changes and move slowly when standing up.

　　3. Hypoglycemia

　　Hypoglycemia mainly results from inadequate food intake or excessive glucose-lowering treatment. Hypoglycemia affects the brain's energy supply, causing dysfunction of brain cells, which can lead to dizziness and falling. Symptoms may include hunger, sweating, and trembling. It is recommended to use medications such as glucose and sodium chloride injection, hydrocortisone tablets, and mannitol injection under medical guidance.

　　4. Hypertension

　　Hypertension is primarily caused by genetic factors, unhealthy lifestyle habits, and diseases. In hypertension, the vascular walls endure increased pressure, potentially leading to cerebral vasospasm and impaired cerebral circulation, causing dizziness. Additional symptoms may include headache, visual disturbances, and tinnitus. It is recommended to follow medical advice and use antihypertensive medications such as nifedipine sustained-release tablets, captopril tablets, and enalapril maleate tablets.

　　5. Arrhythmia

　　Abnormal cardiac electrophysiology or cardiovascular diseases may cause arrhythmia. Arrhythmia affects the heart's pumping efficiency, reducing cerebral blood supply, causing cerebral hypoxia, and resulting in sudden dizziness and falling. Symptoms may include chest pain, dyspnea, and abnormal heartbeat. It is recommended to use medications such as quinidine sulfate tablets, procainamide hydrochloride tablets, and verapamil hydrochloride tablets under medical supervision to alleviate symptoms.

　　It is recommended to ensure adequate sleep in daily life, avoid staying up late and overexertion. Additionally, moderate exercise such as walking and tai chi can help enhance physical balance and stability.