My started over night also, went to bed and woke up with my left side of my body numb from my shoulder to my foot, very scarry. I was dx in April of this year, the testing is tuff waiting to get answers. Now I have most of the feeling back on my left side, my left hand is still pretty numb still not sure if that will get any better or not the heat makes a big difference for me. I have good days and bad, my doctor told me it would take about a year to find a new normal for me. Deffinitly scarry not knowing what is going to happen next. Good luck to you and hang in there staying positive is important.