What is the reason for sweating in cold feet?

it's cold in winter, but some people still sweat on their feet frequently! Often sweating in winter, "sweaty feet" lose heat 25 times faster than "dry feet" and are vulnerable to frostbite.

so why do feet often sweat in winter?

1. Physical weakness is obviously related to seasonal changes.

In Chinese medicine, sweating in winter storage belongs to night sweats due to yin deficiency, and sweating during the day belongs to spontaneous sweating due to qi deficiency.

night sweats

when you fall asleep, you sweat, but when you wake up, you stop sweating. Night sweats are mostly caused by yin deficiency, which leads to hyperactivity of yang, yin does not control yang, and body fluid is sweating, so it is often accompanied by symptoms such as five upset, insomnia, dry mouth and pharynx. It is common in patients with pulmonary tuberculosis infiltration.

spontaneous sweating

spontaneous sweating means sweating frequently without other factors, which has a great relationship with the patient's own physical condition. Spontaneous sweating is mostly related to physical weakness such as lung qi deficiency and body fluid leakage, as well as symptoms such as mental fatigue, fatigue and chills. Therefore, this phenomenon often appears in children or patients with poor health.

2. Primary palmar hyperhidrosis

is caused by excessive sympathetic nerve activity which dominates the secretion function of sweat glands on the soles of feet.

4%~45% of patients with palmar hyperhidrosis are accompanied by plantar hyperhidrosis, 25%~3% with axillary hyperhidrosis, and 1%~5% with head and face hyperhidrosis.

Sweat on hands and feet is mostly wet and cold, sometimes the temperature of hands and feet is only about 33℃, which is 2℃~3℃ lower than that of those who have no sweat. In winter, frostbite is easy to occur, and "peeling" occurs. Occasionally, there is herpes (an eczema in which sweat is stored in the skin of palms and toes when hands and feet are sweaty).

what should I do to deal with sweaty feet in winter?

1. It is impossible to wash shoes often in winter. Prepare a shoe dryer, and proper sterilization is beneficial to foot comfort. After drying shoes, there is less residual moisture, which is more comfortable.

2. Generally speaking, thick socks are warm in winter, but people with sweaty feet are prone to sweat when their socks are thick, which makes them more uncomfortable when they are wet. So the socks should be thick enough.

3. Soak your feet with tea for about an hour, and stick to it for one month. It is also good to soak your feet with vinegar.

4. Change socks frequently, because washed socks are more absorbent and comfortable, and can relieve the influence of sweating.

5. The insole should be made of porous shoes, and the insole similar to leather can be appropriately selected. It is not easy to sweat on the soles of your feet.

6. You should choose shoes with good air permeability and air holes, so that the internal air circulation can reduce water vapor without heat accumulation.