Why the Upper Neck Matters in Migraine: What the Research Shows

Most people think of migraine as something that happens entirely in the head. The research tells a more specific story: the upper neck — the joints, muscles, and nerves at the base of your skull — has a direct, well-mapped neurological connection to the same pain-processing pathway that drives migraine. Here's what's actually established, what's still emerging, and where the evidence runs out.

The Mechanism: Why the Neck and Migraine Pain Share a Pathway

Strong evidence: Sensory nerves from your upper neck and the trigeminal nerve — the nerve most directly implicated in migraine — converge on the same relay station in your brainstem and upper spinal cord, an area called the trigeminocervical complex. A foundational study published in Brain found that stimulating the covering of the brain (the dura) increased the sensitivity of neurons that also receive input from the greater occipital nerve, which runs through the suboccipital muscles at the base of the skull — showing that trigeminal and upper cervical pain signals interact directly at the neurological level. Bartsch & Goadsby, Brain 2003 (PMID 12821523) A comprehensive 2017 review of migraine pathophysiology in Physiological Reviews — one of the most cited modern references on how migraine works in the nervous system — describes this trigeminovascular and trigeminocervical convergence as core migraine biology. Goadsby et al., Physiological Reviews 2017 (PMID 28179394)

Strong clinical evidence, different intervention: Because of this shared pathway, interrupting signals from the greater occipital nerve has a measurable effect on migraine. Two independent meta-analyses of randomized controlled trials found that greater occipital nerve block — an anesthetic/steroid injection — significantly reduces migraine frequency and pain intensity compared to placebo. Shauly et al., Plastic and Reconstructive Surgery 2019 (PMID 31568309) Tang et al., American Journal of Emergency Medicine 2017 (PMID 28844531) This is a medical procedure performed by physicians, typically neurologists or pain specialists, and it's the clearest clinical evidence that the upper cervical/occipital region is a real, treatable contributor to migraine.

Moderate evidence: People with migraine measurably differ from headache-free people on physical exams of the neck. A systematic review and meta-analysis of 35 studies (1,371 people with migraine vs. 1,033 healthy controls) found consistent, reproducible differences in cervical range of motion, the flexion-rotation test, and pressure pain thresholds. Examiners can reliably detect these differences, not just infer them. Szikszay et al., Physical Therapy 2019 (PMID 30690564) A separate study found both episodic and chronic migraine sufferers move their necks less, and more slowly, than headache-free controls. Pinheiro et al., Journal of Clinical Medicine 2021 (PMID 34501252)

Suboccipital muscle trigger points can also reproduce referred headache pain patterns. That's been documented mainly in tension-type headache, not migraine directly, though the referral pathway overlaps with the mechanism described above. Fernández-de-las-Peñas et al., Journal of Headache and Pain 2011 (PMID 21359873)

Emerging evidence: A newly described anatomical structure called the myodural bridge physically connects the suboccipital muscles directly to the dura, the membrane covering the spinal cord and brain, at the top of the neck. Early research suggests tension in these muscles can be transmitted directly to the dura and may influence cerebrospinal fluid dynamics. Li et al., PLoS ONE 2022 (PMID 36054096) It's real, published anatomical and physiological research, but still early, and its clinical significance for migraine specifically hasn't been established yet.

Where the evidence runs out: The suboccipital nerve itself, the small nerve arising from C1, is predominantly a motor nerve controlling muscle movement rather than a primary sensory pain generator. The pain relevance of this region comes from the surrounding muscles, joints, and adjacent sensory nerves, particularly the greater occipital nerve from C2, not from the C1 nerve directly.

What This Means for Your Care

The research above shows the upper cervical spine is a legitimate, evidence-based area to assess in migraine: the neuroanatomy is well established, and migraine patients reliably show measurable cervical differences. That's a narrower, more specific claim than "chiropractic adjustments cure migraines" — and a more accurate one.

Here's what that means for your evaluation:

• Assessing your cervical range of motion, muscle tension, and pressure sensitivity as a genuine part of a migraine workup, not an afterthought

• Treating identified suboccipital and upper cervical dysfunction as one contributor among several, alongside hormonal, digestive, and lifestyle factors, so your plan is built around your specific pattern instead of a generic protocol

  If your migraines are frequent, severe, or worsening, this evaluation should be part of a plan that includes your prescribing physician or neurologist, not a replacement for that care.

Frequently Asked Questions

Is my migraine "caused by" my neck?

Usually not entirely — migraine is a complex neurological condition with genetic, hormonal, and environmental drivers. What the research supports is that the upper neck is a real, measurable contributor to the pain pathway for many patients, worth assessing specifically rather than assumed away.

Do you perform occipital nerve blocks?

No — that's an injection procedure performed by physicians, typically neurologists or pain specialists. It's referenced here as strong evidence for why this anatomical region matters clinically, separate from what we offer.

What does an evaluation of my neck actually involve?

Assessment of cervical range of motion, muscle tenderness at the base of the skull, and pressure sensitivity — the same categories of exam findings shown in the research above to reliably differ between migraine patients and headache-free people.

Should I stop my migraine medication?

No — never adjust migraine medication without your prescribing physician's guidance. This evaluation is meant to complement medical care, not replace it.

Have questions about whether this evaluation makes sense for you? Email asawellnesscenter@gmail.com or schedule an appointment online. We're located at 2405 E. Southern Ave., Suite 3, Tempe, AZ, serving Tempe, Chandler, Mesa, and the greater Phoenix area.