HI all---I got this great heating pad from my Physical therapist last night. It really helped the spasms in my neck. They are usually unbearable, but I used this thing for about a half an hour, and I could move my neck from side to side without all the stiffness for the first time in a long while.
It's called Thermophore---and it's manufactured in MI at Battle Creek Equipment. It's a heating pad that's specifically made so you can wrap it around your head, jaw, or neck. IT's great.