What causes sudden dizziness and numbness in the hands and feet?

Generally, sudden dizziness and numbness in the hands and feet may be caused by unhealthy lifestyle habits, emotional fluctuations, hypoglycemia, anemia, cervical spondylosis, and other factors. Symptomatic treatment through general therapy or medication might be necessary. If symptoms persist, it is recommended to seek medical attention promptly and undergo appropriate treatment under a doctor's guidance. Detailed explanations are as follows:

1. Unhealthy Lifestyle Habits

Prolonged熬夜 (staying up late), standing for long periods, or maintaining the same posture may lead to poor blood circulation, causing dizziness and limb numbness. Additionally, unhealthy habits such as smoking and drinking may also affect overall health and cause sudden dizziness. It is recommended to adjust lifestyle habits, ensure sufficient sleep, engage in appropriate physical activity, and avoid maintaining the same posture for extended periods.

2. Emotional Fluctuations

Excessive excitement or tension may cause rapid breathing, leading to decreased carbon dioxide levels in the blood. This can result in respiratory alkalosis, causing blood vessel constriction and insufficient cerebral blood supply, which may manifest as dizziness and limb numbness. It is recommended to calm emotions, maintain composure, and relieve stress through methods such as meditation or listening to music.

3. Hypoglycemia

Hypoglycemia is mainly caused by inadequate food intake or excessive blood sugar reduction. When blood glucose levels are too low, the brain and nervous system may not receive sufficient energy, potentially causing dizziness and limb numbness. Symptoms may also include sweating, palpitations, and hunger. It is recommended to use medications such as glucose and sodium chloride injection, hydrocortisone tablets, or mannitol injection under a doctor's guidance.

4. Anemia

Anemia may result from malnutrition, excessive blood loss, or impaired hematopoietic function. A decrease in red blood cell count or hemoglobin levels may lead to insufficient oxygen supply to the brain, causing dizziness and limb numbness. Symptoms may also include fatigue, pallor, and shortness of breath. It is recommended to use medications such as compound ferrous sulfate granules, iron dextran tablets, or iron sucrose injection as directed by a physician to alleviate symptoms.

5. Cervical Spondylosis

Chronic strain or degeneration of the cervical spine may lead to cervical spondylosis. In such cases, herniated discs or bone spurs may compress cervical nerve roots, affecting nerve conduction and causing dizziness and limb numbness. Symptoms may also include neck pain and shoulder or back pain. It is recommended to use medications such as aceclofenac tablets, Jingfukang granules, or mecobalamin tablets under medical supervision to relieve symptoms.

If you suddenly experience dizziness and limb numbness, it is recommended to immediately find a safe place to sit or lie down to prevent falls and injuries.