Do I have a sweating disorder or something?

I never sweat by weather, well, if it's like mega boiling 100 blimmin degrees out then obv I will sweat, but I won't sweat even though i have a blazer and jumper on.. but when I move, like putting a sock on, moving from class to class (a few steps?) or anything like that I start sweating ALOT. It's really... iritating, I guess, I tried fanning myself and that doesn't work. This happens alot in the winter, too. I've been doing this for a year now.