What Causes Numbness in Hands and Feet During Summer?

Under normal circumstances, numbness in the hands and feet during summer may be caused by temperature changes, prolonged maintenance of the same posture, multiple peripheral neuritis, iron-deficiency anemia, cervical spondylosis, and other factors. Symptomatic management through general treatment and medication may be necessary. If discomfort occurs, it is recommended to seek timely medical advice and undergo corresponding treatments under a doctor's guidance. Detailed explanations are as follows:

1. Temperature Changes

In high-temperature environments during summer, blood vessels, especially those in the extremities, dilate to facilitate heat dissipation. This may temporarily slow local blood circulation, causing numbness in the hands and feet, possibly accompanied by mild prickling pain or abnormal sensations. Symptoms typically resolve spontaneously after changing positions or environments. It is recommended to change body positions regularly and maintain appropriate physical activity to promote blood circulation.

2. Prolonged Maintenance of the Same Posture

Due to heat, people may prefer sitting or lying down for extended periods during summer. Maintaining the same posture for a long time can compress nerves, causing numbness in the hands and feet. In addition to numbness, there may be localized muscle weakness or stiffness. Engaging in mild physical activities such as walking is recommended to help improve blood circulation and restore nerve function.

3. Multiple Peripheral Neuritis

Multiple peripheral neuritis may result from metabolic disorders or deficiencies in essential nutrients such as vitamins. This condition damages nerve endings, affecting normal nerve conduction and causing numbness in areas such as the hands and feet, possibly accompanied by pain, weakness, or other sensory abnormalities. It is recommended to use medications such as Mecobalamin Capsules, Paracetamol Tablets, and Carbamazepine Tablets under medical supervision.

4. Iron-Deficiency Anemia

During summer, reduced appetite combined with long-term picky eating habits may lead to iron-deficiency anemia. Iron-deficiency anemia results in a lack of red blood cells, causing imbalances in blood supply and leading to limb numbness accompanied by general weakness. Symptoms may also include pallor, fatigue, and palpitations. It is recommended to use medications such as Compound Ferrous Sulfate Granules, Iron Dextran Tablets, and Iron Sucrose Injection under medical guidance.

5. Cervical Spondylosis

Cervical spondylosis may be caused by improper sleeping posture or excessive neck movement. When cervical nerve roots or the vertebral artery are compressed, symptoms such as numbness in the hands and feet and blurred vision may occur, possibly accompanied by neck and back pain, dizziness, and nausea. It is recommended to use medications such as Chlorzoxazone Tablets, Eperisone Hydrochloride Tablets, and Naproxen Sodium Tablets as directed by a physician to alleviate symptoms.

During summer, it is advisable to avoid prolonged exposure to electric fans, especially direct blowing on the hands and feet, to prevent cold-induced vasoconstriction that may worsen numbness.