Posting here shamelessly for traffic, sorry! But been dealing with this for the past few weeks and GP keeps sending me away.
I seem to have a super tight/stuck-feeling neck muscle in the left side of my neck - I can't tell exactly where it is. But if I yawn, or stretch in a particular way, it's like it gets irritated and sends the area into spasm, and gets frozen. I've tried massaging it and foam rolling it, but nothing. I've had 'wry neck' or torticollis before, and it feels a bit like that, except less severe, and the muscle just isn't loosening. Has anyone had this? It's so painful, and not letting up.