Ah HA! Thanks Debbie D, and others who have contributed to this thread. I was actually coming here to read about what could be the reason why my left side goes absolutely ice cold feeling regularly. Figures it's the MS. Thought it might be migraine (not ruling that out either though!).

I can't seem to regulate body temperature these days at all. Sometimes I feel like my skin's burning from the inside out (not painful or uncomfortable... it just feels like a faint sensation of burning, most noticeably around my stomach/waist, and on my shoulders/back).

It's time for one of these....