Hello. Here are just two of many references to neck stiffness or pain from Dr. David Buchholz’s book, “Heal Your Headache.”
“The autonomic symptoms–nausea, vomiting, constipation, diarrhea, flushing or pallor of the skin, sweating, chills and fever–stem from dysfunction of the part of the hypothalamus that normally governs the autonomic nervous system in an orderly fashion but misbehaves in the course of migraine. Photophobia, phonophobia and neck stiffness, all common features of migraine, arise from inflammation of blood vessels in the membranes called meninges that line the brain.”
And, “Neck stiffness, aching, soreness, tightness and tension are common symptoms of migraine. You may experience what you call knots or spasm in your neck. It may feel as if your head is too heavy for your neck to support it. Your neck may crack, creak, crunch, grind or pop. Discomfort often spreads into the trapezius muscles (located between your neck and shoulders) and into the shoulder blades in your upper back. The territory of migraine is broad, and the location of discomfort depends on the locations of blood vessel swelling and inflammation.”
I’ve also had neck problems for years. I believe others on this site have commented that keeping the neck flexible is an important component of their ability to keep migraine under control.
Hope this helps.