Why don't you sweat?
There are many reasons for not sweating. If it is western medicine, the symptoms of not sweating are collectively called "no sweat". There are many reasons, but it is always said that there is something wrong with the sweating process.
Starting from the sweat glands responsible for producing and excreting sweat, the external environment such as temperature and humidity will penetrate the nervous system, so that the hypothalamus responsible for sweat secretion will receive changes, transmit information to sympathetic nerves, secrete nerve conductor acetylcholine, and finally command the sweat glands to secrete sweat; In this process, if there is something wrong with the skin and nervous system, this process will not be completed, and of course there will be no sweating.
Hypohidrosis can be divided into congenital and acquired. Congenital dysplasia of sweat glands is caused by nerve dysplasia or skin ectodermal dysplasia, but these can be found in infants. The acquired problems are also divided into skin damage, neuropathy and side effects of drugs, and the reasons are not known until the examination.
Neuropathy and skin diseases lead to "no sweating"
The central nervous system is the source of sweating, and the hypothalamus is responsible for controlling basic body functions such as normal body temperature, so when the brain, brain stem and spinal cord are diseased, it may not be possible to sweat. Such as stroke, hemiplegia, etc. Half of the body on the stroke side may not be able to sweat, and hemiplegia is the loss of perspiration function in the immobile body area.
The peripheral nervous system includes sympathetic nerve and parasympathetic nerve. In addition to the reduction of sweat secretion caused by degeneration, diseases can also affect peripheral nerve disorders. Diabetes is one of the most common causes of autonomic neuropathy. At first, it may just be that the limbs are not easy to sweat, and it will gradually affect the whole body.
Autoimmune autonomic neuropathy is an autoimmune disease that causes antibodies to attack acetylcholine receptors, making it impossible to transmit perspiration signals. Acute demyelinating polyneuritis, acquired idiopathic generalized anhidrosis, multiple system atrophy, Parkinson's disease, Lewy body dementia and other diseases, or people who drink alcohol for a long time, will also be unable to sweat because of sympathetic nerves.
In addition to hypoplasia, skin problems, burns, rashes and other injuries, or immune system diseases such as scleroderma, xerosis, as well as skin infections, inflammation and cancer, will block or shrink sweat glands, leading to sweating.
Does TCM theory sweat?
In addition to the temperature, Chinese medicine believes that sweating is "yang deficiency" because sweating needs yang to promote it. However, if you are used to eating cold food, or waiting in a place with high humidity for a long time, it is equivalent to putting yang pressure in your body, which looks cold on the surface, but there are two smells fighting in your body, which will make you uncomfortable for a long time and make it more difficult to sweat.
In addition, if you look forward to the air-conditioned room for a long time, the sweat glands will gradually shrink and it will become less and less easy to sweat. At this time, when you suddenly run to exercise, you will feel very hot and uncomfortable, but it is difficult to sweat. Or it's hard to sweat, but it's out of control This is because the body does not have a normal perspiration cycle.
If you don't "not sweat" or "sweat less" for a long time, try to avoid eating cold food, blow less air conditioning, open a dehumidifier at home, develop exercise habits, and slowly adjust your body back. However, if 1 or 2 months later, the situation is still the same, or accompanied by other symptoms, it is recommended to go to the family medicine department to find out the real reason.