The temperature is moderate, but the hands are sweaty, and the rest of the body is as quiet as ever, except for the hands that seem to be a never-ending stream.
It's not harmful, but it's upsetting. During the exam, at the workstation, when punching in, every finger press is a battle. The job you like and the things you like are all out of reach because of these sweaty hands. What's more, it often gives the bad impression of "kidney deficiency".
So, why do these hands sweat so much? It's all about the little sweat glands. Sweat glands are found throughout the body, and they are responsible for regulating body temperature.
When the heat from the outside invades the body and the body temperature rises, the hypothalamus, the thermoregulatory center, will respond quickly and send instructions to ** through the sympathetic nerve. **When the eccrine glands receive the signal, they release acetylcholine, which stimulates the secretion of sweat and helps the body cool down.
Therefore, when the body feels the heat from the outside world, it must find a way to deliver the message quickly. The hypothalamus chooses the sympathetic nerves so that the message of thermoregulation can be quickly transmitted to **.
As a result, the nerves around the eccrine glands begin to activate, and the release of acetylcholine awakens the sleepy eccrine glands. Then, sweat begins to secrete, helping to cool the body.
This series of processes is like a perfect symphony, with each part working in harmony on its own track. Everything is done silently, but with incredible precision.
However, sympathetic nerves do not serve only thermoregulation. It plays a role throughout the body and responds to various emergencies.
Yes, other parts of the brain, especially the cerebral cortex, also control our responses. Imagine that the sympathetic nerves are here, processing all kinds of information to keep our emotions and mental states constantly changing. When we become nervous or excited by mental stimulation, the sympathetic nerves also become excited.
So, what about the nerves of **? Well, these nerves receive information from all directions, and sometimes they don't know what's going on. When this information comes in, they urge the eccrine glands to produce sweat.
That's why your palms get sweaty when you're taking exams, riding roller coasters, or playing games.
However, in the face of complex information transmitted by nerves, sweat glands respond differently at different sites. The eccrine glands in the hands and feet are susceptible to emotional stimuli, leading to sweating. Sweating on the head, face, and body is mainly associated with an increase in body temperature.
Some people are naturally neurotic and are particularly sensitive to stimuli, and even in the absence of obvious emotional stimuli, their hands are constantly sweating, sometimes even dripping. This condition is known as localized hyperhidrosis, and its occurrence is related to a variety of factors, including psychoneurological factors, genetic and endocrine disorders, etc.
To cope with this, we can opt for the use of antiperspirants. The ingredients of these products can seal the sweat ducts and reduce sweating. In addition, there are drugs or botulinum toxin injections that can intercept the acetylcholine that causes sweat glands to secrete, making nerve urgings ineffective and thus reducing sweating. For more severe forms of hyperhidrosis, hand sweats can even be addressed by severing the sympathetic nerves.
However, be aware that these methods have some discomfort or risks to a greater or lesser extent. Always consider carefully and seek professional advice before choosing.
So, the next time you're bothered by sweaty hands, think about the delicate and harmonious physiology behind it. It's not a big deal, it's just that the body is responding to changes in the outside world in its own way.