I use a exercise ball. I lay on it on my back and roll back and forth with my arms spread wide. I do this for about 8 or 9 minutes. A friend who's a PT gave me this exercise. Hope it helps.

Yes, that is one of my triggers, left shoulder and neck muscle spasms. I take a muscle relaxer 2x per day(Skelaxin, only one I've found that works for me ) and use a heating pad a LOT ! I also did PT to "unclench" the spasms, now I have daily exercises that I do to stretch those muscles. Also posture is very important. If I slouch a lot or don't get up from my desk and stretch every hour or two I will get spasms.

I NEVER purposefully try to work them or use them. I'd rather have weak shoulders than work on those muscles and trigger a migraine :-)

I use Voltaren on my shoulders and neck right after a workout before any pain hits. Seems to help.

Try light physical therapy stretches. Just go slowly on increasing tension or weight... Start super light

Yes I do