Stily

I had a neck dissection on the left side and radiation to both sides and yes, I had major neck muscle cramps the first year after surgery also. At the time I found that stretching out in the sauna at the gym really help. I also did the same stretch at home. I would lay flat on my back near a wall (sauna or home) and put my legs up at a 90 degree angle, perpendicular to the wall and touching it for support. I'd sit up and lay down. The first two minutes my neck would not touch the sauna bench or my house floor but I'd cradle my head in my hands and gently press until it did. Ahhhhhh.
I do not know if it was the surgery or the radiation but I do know it happened, I was scared for a year about it, and now it has stopped. I still do yoga and pilates exercises which seem to help

Gary is right that MJ does indeed help with such spasms, not only in the neck but the jaw muscles.
Charm