I've had the cold/hot tinglies before. About a week or two before I got diagnosed. It was actually considered my 2nd exacerbation and added to the MRI's I got a week after the cold/hot tinglies started, was what got me my diagnosis. (was more likely my 3rd or 4th exacerbation, but the neuro had only seen the exacerbation before it and wouldnt count the others)

At the time it lasted about 2 or 3 weeks (I think) so if it's acting the same as last time, I might (hopefully!) get normal sensation back in a week or two. (knock on wood!)

I just got back from the yarn store, and I think walking around a bit helped some. It's not burning as much...just cold tinglies right now.