If you just sweat more than other people when it’s hot or you’re exerting yourself, that’s not usually a sign of trouble. Sweating is a normal reaction when your body’s working harder and needs to cool itself down.
There are natural variations in how people sweat, just as there are variations in other bodily functions. Some people start sweating more easily than others.
True excessive sweating goes beyond the normal physical need to sweat. If you have hyperhidrosis, you may sweat heavily for no reason — when it’s not appropriate to the circumstances.
Let’s say that the temperature is mild, and you’re not anxious, and you don’t have a fever, and you’re just watching a movie with your family. If you’re sitting there sweating profusely, that’s not normal.
Excessive sweating, or hyperhidrosis, can be a warning sign of thyroid problems, diabetes or infection. Excessive sweating is also more common in people who are overweight or out of shape. The good news is that most cases of excessive sweating are harmless.
The most common cause of excessive sweating is called primary focal hyperhidrosis. This form of hyperhidrosis affects about 3% of the population, and usually starts in childhood or adolescence.
Primary focal hyperhidrosis does not cause illness. Basically, you just sweat excessively. Although it is a medical condition, it’s not a sign of disease or a drug interaction. People who have it are otherwise healthy.
The symptoms of primary focal hyperhidrosis are fairly specific. It’s called focal or localized because it only affects specific parts of the body, such as the underarms, groin, head, face, hands, or feet. Symptoms also tend to be symmetrical, occurring on both sides equally.
Why does it happen? Experts aren’t sure, but primary focal hyperhidrosis seems to stem from a minor malfunction in the nervous system. There’s some evidence that it could run in families.
Some people are merely inconvenienced by excessive sweating. Others are so embarrassed that they limit their social and work life in harmful way.
Botox offers relief to patients who severely sweat. Botox has been proven to temporarily block underarm nerves that signal the sweat glands to produce sweat. The injection lasts up to 6 months and is effective in reducing sweat.
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