I sweat when I work in hot weather. I'm sweating like rain. Why?

Sweat gland of human body is a kind of secretory gland distributed in the dermis of skin, and there is a long catheter to guide secretion (sweat) to the surface of skin. Sweat glands are mostly distributed in the epidermis of our body, especially in armpits, soles of feet, palms and foreheads. Generally speaking, healthy people will increase the secretion of sweat glands when exercising or encountering high temperature, which is a physiological function of lowering the rising body temperature. Therefore, obese people sweat more easily than thin people, not because the former has a large body surface area, but because obese people are overweight and their body temperature tends to rise. In order to reduce excessive body temperature, it must be adjusted by sweating more. In addition to the above reasons, those who usually do not sweat but sweat a lot may have problems with sweat glands. Local hyperhidrosis may be sympathetic nerve injury or abnormal reaction, and the secretion of choline acetate increases, resulting in excessive sweat secretion by eccrine glands. Systemic hyperhidrosis can be an abnormal physiological reaction, symptoms caused by some diseases such as hyperthyroidism, diabetes and other endocrine diseases, and also caused by hypertension, menopause and the role of adrenal cortical hormones. In addition, taking cold medicine to reduce fever and shock may also cause a lot of sweating. When the brain is anemic, the blood flow in the brain is blocked and the thermoregulatory center is stimulated, so people will sweat more. Children are also prone to sweating because of their size. Hyperhidrosis caused by mental depression Another type of hyperhidrosis is called local hyperhidrosis, such as soles of feet, armpits, forehead and nasal tip. And it is easy to sweat, for example, when flying or driving, the palms sweat; When you speak in public, your face will sweat, which mostly happens when you are depressed or moved. In addition, there is sweating on one side of the body. Hemiplegic patients will sweat more on the unconscious side; Trauma, swelling and inflammation of cranial nervous system can also cause unilateral hyperhidrosis due to stimulation of sympathetic nerve. Hyperhidrosis includes generalized hyperhidrosis and localized hyperhidrosis. Systemic hyperhidrosis often occurs with moist skin surface and paroxysmal sweating. Local hyperhidrosis is common in palms, soles and armpits, followed by nasal tip, forehead and genitals. , and often occurs in teenagers. Patients are often accompanied by peripheral blood circulation dysfunction, such as wet and cold skin of hands and feet, blue or pale skin, frostbite and so on. Foot hyperhidrosis is caused by poor evaporation of sweat, which makes the plantar epidermis white, often accompanied by foot odor. When sweating in armpit and vulva, it is easy to cause erythema, folliculitis and boils because the skin in this area is thin and tender and often wet. 1, avoid nervousness and emotionalism. Those with mental mood can take oryzanol, bromide and diazepam orally. 2, anticholinergic drugs such as atropine, belladonna, propofol, etc. , has a temporary effect. When the dosage of reducing sweat secretion is reached, patients will have obvious side effects such as dry mouth, skin flushing and palpitation. 3. External astringents can be applied with 10% glutaraldehyde solution and 2%-4% formaldehyde solution. People who sweat too much under their arms can use 20% aluminum chloride ethanol solution for external use. Before taking the medicine, dry the armpit and apply it externally every night before going to bed for 7 days. Patients with palmoplantar hyperhidrosis can also be soaked in 5% alum solution or compound copper sulfate solution; Qin Ying, with sweaty feet, put on socks and shoes with good air permeability and water absorption. 4, iontophoresis with tap water and direct current as iontophoresis is suitable for hyperhidrosis. In addition to the above methods, most of the treatment methods for hyperhidrosis are aimed at the sympathetic nervous system, such as surgical ligation of the sympathetic nerve to eliminate the regulating function of the sympathetic nerve to sweat glands, so as to achieve the effect of reducing sweating. Sweating on hands is different from sweating on other parts of the body. Other parts sweat because of the heat. The hotter it is, the more you sweat. Sweating of palms is related to physique and endocrine. A healthy person should have dry palms even though he is sweating all over. People with sweaty hands often have no sweat on their bodies, but their palms are all cold sweat and feel very cold. Some people sweat a lot in winter. Sweating in the palms is a sign of deficiency and cold in the body. If you are afraid of cold at the same time and your hands and feet are cold in winter, it should be right. Eat more warm food to regulate the body, and at the same time strengthen exercise, with the aim of accelerating blood circulation and promoting metabolism, which should have a good effect. Experts believe that under normal circumstances, sweating is a normal physiological phenomenon, which can help regulate body temperature and moisturize skin. However, if the hands sweat too much uncontrollably, it will affect people's normal work and life. The proportion of people with sweaty palms in the crowd is not small, and the proportion of people with severe sweating who develop "palmar hyperhidrosis" is probably less than 5%, which is more troublesome. Some children have sweaty palms. When doing homework, they must always wipe their hands to avoid wetting the exercise books. When taking the exam, the sweating speed doubles, which affects the exam effect. Some people can't even hold hands with others for a long time. Traditional Chinese medicine believes that people with heavy damp heat are most likely to sweat on their palms, which is related to the high excitability of the sympathetic nervous system. Experts also pointed out that the appearance of this symptom may be related to heredity, which is a physical problem of people and has no direct impact on health. Generally speaking, people who sweat moderately or slightly in their palms can eat something that clears away heat and strengthens the spleen. In summer, you should eat more things that clear away heat and relieve summer heat, promote digestion and strengthen the spleen, so as to better resist damp heat and reduce the times and frequency of sweating in your palms. Patients with moderate and severe palmar hyperhidrosis should choose surgical treatment when the method of eliminating damp heat can not achieve good results, but there are certain taboos in performing surgery. Before choosing, it is necessary to consult a doctor and proceed according to their own situation.