. Then it got to my legs. Now it's starting to go threw my arms. Why is it spreading? Is there anyway to stop this? I've seen a dermatologist and he said that it's no problem. I should only contact him when I feel pain. Right now I don't feel pain. I only feel colder than other people. Oh and this started when I got my period. Does this have anything to do with it? I'm not overweight. My BMI is normal. My parents say that exercise should help. Is that true? Please help!