My PCP worked with me and
found that it was the muscles in neck and
upper back causing them. I took Flexeril
first as needed, then nightly, and when I missed a dose, I would get a headache. Doc then took me off saying I could not take it for an extended time.
I was assigned a new PCP, and saw her for the headaches because it's very intolerable and I when I turn my head to the left I feel pain, like someone pinching me inside. She did a cspine xray, showed nothing.