Sweating is a natural body function, however why do some people sweat more than others? Sweating is necessary, its purpose is to control and maintain our body temperature. Sweating is normal and completely necessary. Sweat, which is also called perspiration, is a secretion of fluids that is composed mostly of water. In this particular case you are sweating excessively in one area of your body.
The first question is why does this happen? Why do I sweat more here rather than in different areas of my body? To clarify the medical term for extreme sweating is called "hyperhidrosis" or what is more commonly known as excessive sweating.
The nervous system which is controlled by the brain makes a decision where and how much to sweat, this is different for different people. Each of us can sweat excessively in different areas of our bodies for example hands, feet, or back etc. This is also true for those who do not suffer from excessive sweating. So when you sweat in one location over another it occurs because this is a more effective sweating gland for you.
Basically here is what happens when excessive sweating occurs. The Sympathetic Nervous System goes into overdrive. It is not completely understood or known what exactly causes excessive sweating. With that said there are a few indicators.
It has been noted that people sweat less at night, exercise is highly recommended for people with "hyperhidrosis" for less sweating afterwards. Other factors that can lead to excessive sweating are smoking cigarettes, drinking coffee, having too much salt in your diet, and to top it off eating too many sweets. All of the above can increase sweating. Now for the shocker, a healthy diet can actually reduce sweating.
The reduction in sweating by avoiding the above happens because you reduce the stimulus to your nervous system, hence keeping your muscles and mind relaxed so your body feels that it doesn't need to sweat due to an overactive nervous system. The reality is this. You can implement different techniques to stop excessive sweating. However remember there is no one method that fits all.