The Overlooked Joint: David Claggett on Why Migraines Start at the Top of Your Spine

Most headache sufferers have tried everything — medication, hydration protocols, blue-light glasses, elimination diets. What almost none of them have done is look up. Not metaphorically. Literally up, to the top of the spine, where the skull meets the first cervical vertebra. That's where David Claggett has spent his career, and it's where he believes most chronic headaches actually begin.

Claggett practices upper cervical chiropractic at Genesis Chiropractic in Pataskala, Ohio, specializing in the knee-chest technique — one of the most precise and gentle methods in the upper cervical toolbox. His focus is the craniocervical junction, the region where the atlas and axis vertebrae form the structural bridge between the brain and the body. It's one of the most neurologically dense areas in the human body. It's also one of the most systematically ignored in conventional headache treatment. While neurologists focus on brain chemistry and primary care doctors reach for triptans and beta-blockers, Claggett looks at the structural gateway that governs nerve transmission and blood flow to the brain itself.

Where the Spine Meets the Skull — and Where Headaches Hide

The anatomy Claggett describes is remarkably precise — and remarkably vulnerable. The atlas vertebra, C1, is a ring of bone that cradles the brainstem, the command center for autonomic function, pain processing, and consciousness itself. The vertebral arteries thread through narrow openings called transverse foramina on their way to supply the posterior brain — the cerebellum, the occipital lobes, and the brainstem — with oxygenated blood. When this junction is properly aligned, everything flows without resistance. When it's not, even by millimeters, the consequences cascade in ways that conventional imaging rarely captures.

Compressed vertebral arteries reduce cerebral blood flow to the posterior brain, which can trigger the vasospastic events that manifest as migraine aura and throbbing pain.^[1] Irritated sub-occipital muscles — the four small muscles that control fine head movements — pull on the dural membrane, the tough connective tissue that envelops the brain, creating the band-like pressure of tension headaches. And disrupted nerve signaling between the brainstem and the body can amplify pain sensitivity system-wide, turning what should be a minor stimulus into a full migraine cascade. A 2015 observational study documented measurable changes in cerebrovascular function following atlas realignment in migraine patients, with reductions in both headache frequency and intensity.^[2]

What makes this picture so frustrating for patients is that standard diagnostic imaging — CT scans, MRIs — typically evaluates the brain itself, not the biomechanical relationship between the skull and the first two vertebrae. A patient can have years of clean brain scans while the structural source of their headaches sits just below the scanner's field of view. For anyone exploring root-cause approaches to headaches, the craniocervical junction represents one of the most anatomically specific — and most frequently missed — starting points.

Gentle Precision Over Brute Force

Claggett's use of the knee-chest technique reflects a philosophy that runs counter to what many people imagine when they hear "chiropractic." There's no twisting, no cracking, no high-velocity thrust. The patient is positioned on a specialized table, and the correction is delivered with a precise, low-force contact to the atlas or axis. The adjustment is often so subtle that patients wonder if anything happened at all. The proof comes in what follows: restored blood flow, released muscular tension, and headaches that stop returning.

That last phrase — "the symptoms go away because they aren't needed anymore" — captures something important about how upper cervical practitioners understand pain. In this framework, a headache isn't a malfunction. It's information. The body is signaling that something is structurally wrong at a level that demands attention. Suppress the signal with medication, and the structural problem persists. Correct the structure, and the signal becomes unnecessary. This aligns with what a growing body of evidence shows about chiropractic approaches to musculoskeletal conditions — that addressing the mechanical root cause often resolves symptoms that years of pharmacological management could not.

A 2017 randomized controlled trial published in the European Journal of Neurology found that chiropractic spinal manipulative therapy led to significant reductions in migraine days, with the treatment group showing greater improvements in migraine duration and headache index compared to controls during the follow-up period.^[3] And a 2018 study reported that 72% of migraine patients experienced considerable improvement after receiving cervical chiropractic care — outcomes comparable to or exceeding pharmacological treatment in several measures.^[4] For patients who've cycled through multiple medications with diminishing returns, these numbers represent something the pharmaceutical approach rarely delivers: resolution rather than management.

The Diagnostic Blindspot

Understanding why migraines are so difficult to treat requires understanding why they're so often misdiagnosed. The International Classification of Headache Disorders recognizes over 200 headache types, yet the standard clinical pathway for most patients begins and ends with symptom-based classification: tension-type, migraine with aura, migraine without aura, cluster. Treatment follows classification — triptans for migraines, NSAIDs for tension headaches, preventive medications for chronic daily headache. Nowhere in this algorithm does a clinician routinely assess the biomechanical integrity of the upper cervical spine.

This matters because cervicogenic headaches — headaches originating from the neck — can perfectly mimic migraines. They produce unilateral pain, sensitivity to light, nausea, and visual disturbances. A patient with atlas misalignment can carry a migraine diagnosis for years, dutifully taking medication that treats the symptom while the structural cause persists untouched. Evidence-based guidelines for chiropractic headache treatment now specifically recommend spinal manipulation for both episodic and chronic migraines, suggesting that the profession's understanding of cervical involvement in head pain has outpaced mainstream neurology's clinical practice.^[5]

The connection between the upper cervical spine and headache extends beyond simple mechanical compression. The trigeminal nerve — the primary pain pathway for migraines — has intimate anatomical connections with the upper three cervical nerve roots through the trigeminocervical nucleus. This convergence means that cervical dysfunction can directly activate the same neural pathways that migraine medications target, explaining why structural correction can sometimes achieve what pharmaceutical intervention cannot. For anyone researching the best practitioners for headache care, understanding this mechanism helps explain why upper cervical evaluation deserves a place early in the diagnostic process, not as a last resort.

Before the Prescription, Check the Spine

This is perhaps Claggett's most important message, and it's about sequencing, not ideology. He's not arguing against medication — he's arguing against the order in which options are explored. The standard headache pathway — over-the-counter painkillers, then prescription medications, then neurologist referrals, then advanced imaging, then more medications, then Botox, then nerve blocks — can go on for years and cost tens of thousands of dollars before anyone examines the structural integrity of the upper cervical spine. By then, patients have often cycled through multiple specialists and drug classes without a single practitioner putting their hands on the atlas vertebra.

An upper cervical evaluation is non-invasive, relatively quick, and carries minimal risk. If the assessment reveals misalignment, a targeted correction can be attempted. If it doesn't, the patient has lost nothing and gained the certainty that their headaches aren't structural in origin — information that actually helps narrow the diagnostic picture. In a healthcare system that routinely orders $3,000 MRIs before considering a $150 chiropractic evaluation, the inefficiency is striking.

For the millions of Americans living with chronic headaches who've exhausted conventional options, or for those just beginning to navigate the landscape of chiropractic approaches to migraine care, Claggett's recommendation is straightforward: before you escalate, evaluate. The craniocervical junction sits at the intersection of neurology, biomechanics, and vascular function. It governs blood flow to the brain, nerve signaling between the brain and body, and muscular tension that directly connects to the pain-sensing membranes of the skull. And for a remarkable number of headache sufferers, it holds the answer that years of medication never found — sitting quietly at the top of the spine, waiting to be examined.

If you're experiencing chronic headaches and want to understand whether structural factors might be contributing, exploring what a functional approach to pain management looks like can help you make more informed decisions about your care. Understanding how inflammation affects neurological function may also reveal connections between your headaches and systemic factors that a purely symptom-based approach would miss.