I've noticed problems in extreme cold. We've been having -15 and -20 degree temps here. I'll go outside and my feet will suddenly feel like someone dropped them in a bucket of water and I suddenly had giant ice cubes surrounding my shoes. (ice shoes) and I had to walk slower.

But, it seems like my sensitivity seems to fluctuate, heat doesnt always bother me, and cold doesnt always bother me.

I guess the MS trolls in my body cant decide on what temperature is the magic number for making my body go all wonky.