anxiety
"I had anxiety that would tighten my muscles so tensely, especially in my jaw, my neck, my throat and between my shoulders. My doctor prescribed me a small dose as needed. I wish I'd known that this is what I needed. I felt such relief, my thoughts and muscles relaxed and the next day I felt like a million bucks. 
I'm aware that there are some addictive problems for some people, happily after that one night of relaxation its like I was freed from a tormenting chamber and I didn't feel need for more. I have it on hand and have used it a couple times, but have felt nothing of the intense pain I'd known before. I can think more clearly just from those few nights/days of relief in the three months I've had it."