Many people will often sweat, obviously the weather is not hot, and the rest of the body does not sweat, but the sweat on the hands has been left until it can't stop, although there is no harm, but it is very annoying, and what is even more annoying is that such a pair of hands often causes a bad impression of kidney deficiency to others, so why do some people's hands like to sweat so much?
This has to be mentioned - little sweat glands, our whole body is almost covered with small sweat glands that secrete sweat, they play an important role in regulating our body temperature.
Sweaty hands. When you run outside in the sun on a hot afternoon, the heat from the outside world will run into your body, raising your body temperature, so that the organs in the body can have a comfortable environment, and the body cannot watch you be roasted under the sun.
So a special department was set up in a place called the hypothalamus brain in the head to regulate body temperature, and when they felt the heat, they would find a way to lower the temperature, and send a message to let the little sweat glands in the ** throw the sweat to the surface of the **, so that the sweat evaporates and takes away the heat to reduce the body temperature.
But how do you tell the little sweat glands?
This "body is too hot" message has to find a fast way to transmit it to **, so the hypothalamus finds the sympathetic nerve, so that the message can be transmitted to ** through the nerve immediately.
When the nerves around the eccrine glands receive this message, they will throw out a bunch of things called acetylcholine, knocking the sleepy eccrine glands around you awake, and then you will sweat.
Sweaty hands. But the sympathetic nerves are not specifically designed for thermoregulation, they are also controlled by other departments in the brain, including the cerebral cortex, which can also affect changes in your mood and spirit.
So when you are mentally stimulated and become nervous and excited, the sympathetic nerves will be excited, and the nerves of ** look at the transmission of piles of messy information that you haven't seen before, and you don't know what's going on, you can only speculate if something is wrong, so you quickly get up with the sweat glands secreting sweat, which is why your palms are sweaty when you are nervous.
But in the face of the messy information transmitted by the nerves, except for the small sweat glands in the hands and feet, the sweat glands in other places will appear calmer.
Therefore, sweating on the hands and feet is mainly related to emotional stimulation, while sweating on the head, face and body is mainly related to an increase in body temperature.
Sweaty hands. Some people are naturally nervous about the nerves that control the sweat glands, and they are particularly sensitive to external stimuli, so even if they are not affected by any special emotional stimulation, their hands will continue to sweat, and sometimes the sweat can even be so much that they continue to drip from the hands, all of which are collectively called localized hyperhidrosis.
In addition to being related to psychiatric and neurological factors, it is also related to genetic factors, endocrine disorders and other factors.
In addition, there are some drugs or botulinum toxin injections, their effect is to rob the acetylcholine that urges the secretion of sweat glands halfway, so that even if the nerves are in a hurry, the eccrine glands will ignore it, and it can also reduce the secretion of sweat.
For more severe hyperhidrosis, there is a more direct way to solve it by cutting off the sympathetic nerves that are responsible for the sweat glandsSweaty hands. problems.
However, the above methods will have some bad experiences or risks, and we must have a deep understanding before choosing these methods.