For the past few months I've been Paresthesia (a tingling, pins and needles sensation) around my back and torso and sometimes in my arms and legs. It only ever seems to occur when I come inside from the cold (basically when I go from a cold area to a hot area. I also experienced some finger twitching off and on for a little while but seems to have gone away.

I was diagnosed with Sherman's Disease about 6 years ago (when I was 14, I'm 20 now) and I did experience some pinched nerves when I aggravated my back due to to swelling, so I thought that maybe a similar thing is happening. However, I haven't had any problems with my back for a few years ago and at the time of my diagnosis the doctor said it would resolve it's self in a few years.

Anyways, any advice would be appreciated, just want to know if I should be worried or not.