So, are you left or right handed? What "side" do you use more often. Do you carry a purse or bag around and, if so, what side?

Go through your day really thinking about how you use those muscles. It could be a nerve problem too though. Has anyone, like your neuro, looked at your spine via an MRI?

Have you thought about physical therapy?

Muscles that get weak, no matter what the cause, can cramp or spasm.

I hope you can figure out what is going on.

Annie