Sorry your getting spasms AMN.
I just got back from the MS neuro's office. He said that the change of seasons really plays havoc with MS, especially fall and spring. We went from weather in the 70s here and warm sunny days to 50s with a lot of clouds and chilly so I'm hoping that's causing my extremely worse fatigue and blahness. I got two new RXs and need to change another.
I hope it's something like that causing the spasms and that you'll be feeling better soon.