What causes cold feet during sleep at night?

Generally, cold feet during sleep at night may be caused by insufficient warmth, poor blood circulation, hypothyroidism, Raynaud's syndrome, lower extremity arteriosclerosis obliterans, and other reasons. If discomfort occurs, it is recommended to seek timely medical evaluation and treatment at a正规 hospital. Specific analysis is as follows:

1. Insufficient Warmth

When the feet are exposed during sleep or when clothing and bedding are too thin, body heat is easily lost, making it difficult to maintain normal temperature, resulting in cold feet. Wearing thick socks before bedtime, using a hot water bottle to warm the feet, switching to thicker and breathable bedding, and avoiding direct exposure of the feet to cold air can help.

2. Poor Blood Circulation

Prolonged sitting or standing can obstruct blood return in the lower limbs. As the feet are located at the end of the circulatory system, inadequate blood and oxygen supply reduces heat production, leading to cold feet. Soaking feet in warm water for 15 minutes before bedtime, gently massaging the soles to promote circulation, and avoiding maintaining the same posture for long periods before sleep may improve the condition.

3. Hypothyroidism

Insufficient secretion of thyroid hormones leads to decreased metabolic rate and reduced heat production, causing symptoms such as cold feet and fatigue. Medications such as levothyroxine sodium tablets, thyroid tablets, or levotiroxine tablets may be used under medical guidance. Maintaining regular作息 and adequate nutrition is also important.

4. Raynaud's Syndrome

Cold temperatures or emotional stress can trigger spasms and constriction of peripheral blood vessels, sharply reducing blood flow to the feet, resulting in cold feet and pale skin. Medications such as nifedipine sustained-release tablets, diltiazem hydrochloride tablets, or reserpine tablets may be taken under a doctor’s supervision. It is important to keep the feet warm and avoid triggers.

5. Lower Extremity Arteriosclerosis Obliterans

Atherosclerosis in the lower limb arteries causes narrowing of the vessel lumen, leading to insufficient blood supply to the feet, resulting in coldness and numbness. Medications such as enteric-coated aspirin tablets, clopidogrel hydrogen sulfate tablets, or cilostazol tablets may be used as directed by a physician. In severe cases, lower limb arterial bypass graft surgery may be required.

In daily life, focus on keeping the feet warm; engage in moderate exercise to promote overall circulation; undergo regular health check-ups to monitor vascular and thyroid function; and strictly follow medical instructions for medication use if diagnosed with any condition—do not discontinue or adjust dosage without consultation.