What causes lack of sweating in the palms?

Under normal circumstances, the absence of sweating on the palms may be caused by suitable ambient temperature, insufficient body hydration, nerve damage, somatoform autonomic dysfunction, or hyperthyroidism. It is recommended to seek timely medical attention, identify the underlying cause, and receive symptomatic treatment under the guidance of a qualified physician. Specific analyses are as follows:

1. Suitable Ambient Temperature

When the environmental temperature is comfortable, the body does not need to sweat excessively to regulate its temperature, so the palms may not produce noticeable sweat. Wearing appropriate warm clothing in daily life can help maintain hand warmth and promote blood circulation.

2. Insufficient Body Hydration

When the body lacks sufficient water, sweat gland secretion decreases accordingly, leading to reduced or absent sweating on the palms. It is advisable to replenish fluids appropriately, avoid excessive fatigue, and ensure adequate rest to support overall health.

3. Nerve Damage

Nerve damage may interfere with neural signaling to the sweat glands in the palms, preventing them from properly receiving instructions from the brain, thereby resulting in an absence of palm sweating. Patients may also experience symptoms such as abnormal hand sensation or weakened grip strength. Under medical supervision, medications such as mecobalamin tablets, vitamin B1 tablets, or citicoline sodium injection may be used for treatment.

4. Somatoform Autonomic Dysfunction

Somatoform autonomic dysfunction disrupts the balance of the autonomic nervous system, causing imbalance between the sympathetic and parasympathetic nerves. This can reduce sweat gland activity in the palms, leading to lack of sweating, possibly accompanied by symptoms such as palpitations or dizziness. Under medical guidance, medications such as venlafaxine hydrochloride capsules, mirtazapine tablets, or propranolol hydrochloride tablets may be prescribed for treatment.

5. Hyperthyroidism

In patients with hyperthyroidism, elevated levels of thyroid hormones may suppress normal sweat gland function, resulting in reduced sweating on the palms. This condition is typically accompanied by symptoms such as palpitations and weight loss. Treatment may include medications such as carbimazole tablets, potassium iodide tablets, or metoprolol tartrate tablets, taken as directed by a physician.

In daily life, it is recommended to maintain regular作息 (sleep-wake cycles), ensure sufficient rest, avoid staying up late, eat a balanced diet, dress appropriately for the weather, and engage in moderate physical exercise, all of which help enhance immune function and promote overall health.