I have this too, it's called hyperhidrosis. It's thought to be caused by an overactive sympathetic nervous system. It could be winter and freezing, and my hands and feet are still sweating. When I was in first grade, my teacher used to have a special little clothesline outside the class that she would hang my papers to dry after I wrote an assignment in class. I used to cry because I felt like a freak. Over the years I've learned to deal with it, but I HATE social situations when I have to meet people and shake their hands. I'll actually avoid meeting people just so that I don't have to shake their hands. When I was little I wished I was Japanese so that I could just bow and no one would have to touch my hand. It's a silly thought, but I was made fun of so badly for sweaty hands as a kid. I also can't wear cute sandals in summer because my feet would get sweaty, so I have to wear ballet flats with little no show socks. It's like my body thinks this whole thing is funny, because sometimes I can go like a month without sweating, then BAM back to wet hands and feet. The amount that I sweat also varies. Sometimes it's a little dampness and other times it's really bad. I've tried to find what triggers it, but no luck.
People always tell me "oh it's no big deal, it's just sweating" but they don't know what a pain in the butt it is to have to deal with it. I've tried iontophoresis for it, but it burns so badly and makes my palms peel. I've tried sleeping with prescription deodorant on under gloves, but it also burns and makes my palms peel. I've gone to a Chinese homeopathic doctor and she gave me a whole bunch of gross crap that I had to boil and drink, and it did nothing. I've also tried yoga because I thought it was an anxiety thing, but that didn't help. It's actually genetic in some cases and thyroid related in others, so I would recommend going to your doctor and asking him to measure your thyroid levels. If it's your thyroid, then meds will help. In my case it's genetic, my grandpa and my mom had it. When it's genetic, nothing will cure it unfortunately. I can't afford botox yet, but once I can I'm def. getting it no matter how much it hurts. Botox seems like the only thing that will work 100% without serious side effects. Don't get ETS surgery, your hands and feet will become bone dry and you'll start compensatory sweating all over your body like your back and face, which IMO is worse than the hands and feet. I've read stories from people who have had this and a lot of them regret it when sweat starts dripping down their faces 24/7.
The International Hyperhidrosis Society has a great e-newsletter that they send out, I recommend signing up for it. They talk about new research that's being done and last year they even offered free botox to people under 17 as part of a research study.
http://www.sweathelp.org/English/PFF...ns_Archive.asp