I have the same thing. Even if chilly I will shiver uncontrollably till I warm up.

Thanks to everyone for making me realize I'm not alone.

Yes, both stress and cold make tremors worse for me too.

all the time, when its really cold out I put my left hand in my coat pocket to help steady it. also when im really nervous

Yes! Thought it was just me. I have started carrying a sweater with me everywhere!