I have hyperhidrosis guys. I'm pretty sure I do. It's where a person sweats a lot even if they're at rest or they're in cool areas. Even a small amount of stress can make them sweat profusely in the palms, back, neck, and/or underarm.
I've always had sweaty hands ever since high school started, and I've been very confused why, I asked my mom about it and she said she'd do research about it, but I did research n my own and found out this, so I guess this is the answer to my sweaty hands and why I sweat so much in cold areas!!