Upper Cervical Chiropractic for Post-Concussion Syndrome: Why Symptoms Linger Long After the Brain Has Healed

When the Brain Heals but Symptoms Don't: Upper Cervical Chiropractic for Post-Concussion Syndrome

Most people expect a concussion to clear up in a couple of weeks. For roughly 10–15% of patients, it doesn't. Headaches drag on for months. Brain fog makes a familiar email feel like a foreign language. Light hurts, sound hurts, and standing up too quickly turns the room into a slow carousel. When that pattern stretches past the one-month mark, clinicians call it post-concussion syndrome (PCS), and it can quietly steal a year — or more — of someone's working life, school year, or athletic career. What is often missed is that the original blow rarely happens to the brain alone. The neck takes the same forces, sometimes worse, and the place where the skull meets the spine — the craniocervical junction (CCJ) — becomes a silent driver of symptoms long after the brain itself has structurally healed.

The cranio-cervical junction: where the skull meets the upper cervical spine. The atlas (C1) and axis (C2) sit closely around the brainstem, nerves, and blood vessels.

To understand why, it helps to look at the anatomy. The CCJ is the meeting point of the occiput (the base of the skull), the atlas (C1), and the axis (C2). Threaded through this small, mobile region are the brainstem, the vertebral arteries supplying the back of the brain, the upper portion of the spinal cord, the vagus nerve, dense sympathetic nerve plexuses, and the cervical proprioceptors that tell your nervous system where your head is in space. The atlas vertebra is unique in the human body: it has no disc above or below it, no spinous process to lock it in place, and it carries the entire weight of the head balanced on two small joint surfaces. That biomechanical fragility is part of why the upper cervical spine is so consistently implicated when a concussion or whiplash occurs.

Biomechanical and clinical research has shown that the forces required to concuss the brain are dramatically higher than the forces required to strain cervical tissue, meaning the same impact that produces a concussion almost always also injures the neck. The brain rattles inside the skull while the head whips on the neck, and the structures of the CCJ absorb energy in directions they were never designed for.

Even when standard imaging looks unremarkable, ligamentous laxity, joint misalignment, and altered proprioceptive input can persist. Treleaven's work on sensorimotor disturbances in neck disorders shows that altered cervical input scrambles postural stability, head position sense, and eye movement control — the very systems that recovery from concussion depends on. The result is a patient who is told their concussion has "healed" but who still cannot tolerate a grocery store, a Zoom screen, or a flight of stairs.

This is where upper cervical chiropractic for post-concussion syndrome enters the picture. Upper cervical work — through approaches such as NUCCA, Atlas Orthogonal, Blair, and Knee-Chest — is fundamentally different from general chiropractic. There is no twisting, popping, or aggressive force. Instead, precision imaging is used to measure the exact position of the atlas and axis, and a specific, low-force correction is delivered to restore alignment. The goal is not to "crack" the neck; it is to remove a small mechanical stressor on the brainstem and surrounding neurology so that the body's own healing systems can finish the work the concussion interrupted.

The lesser-known link between PCS and the craniocervical junction

Here is the surprising connection most patients never hear: many of the lingering symptoms of PCS — vertigo, blurry vision, fatigue, anxiety, racing heart, light sensitivity, even sleep and gut disturbances — are mediated by the autonomic nervous system, and the largest concentration of autonomic input and output in the spine sits at the CCJ. The vagus nerve passes immediately adjacent to the upper cervical vertebrae. The superior cervical ganglion of the sympathetic chain sits just below.

Post-concussion syndrome can involve more than headaches. Symptoms may include dizziness, fatigue, light sensitivity, memory problems, difficulty concentrating, sleep problems, appetite changes, and mood changes.

Cervical proprioceptors fire continuously into the brainstem to calibrate balance and gaze stability. When the atlas is even a few millimeters off neutral, these systems can be subtly but persistently irritated.

The clinical evidence for addressing the neck in concussion recovery has steadily grown. Schneider and colleagues' 2014 randomized controlled trial in the British Journal of Sports Medicine found that combining cervical spine physiotherapy with vestibular rehabilitation produced dramatically faster medical clearance to return to sport — 73% of the treatment group cleared within 8 weeks compared with 7% of the control group.

• Reneker's 2017 randomized clinical trial in the Scandinavian Journal of Medicine & Science in Sports showed that early physical therapy that included cervical work cut time-to-medical-clearance roughly in half for athletes with concussion-related dizziness.

• Kennedy and colleagues' 2019 prospective case series in JOSPT documented persistent cervical dysfunction in patients with prolonged post-concussion symptoms and improvement with targeted neck-focused care.

• Cheever and colleagues' 2016 review in the Journal of Athletic Training catalogued the cervical assessment tools — joint position error, smooth-pursuit neck-torsion, head-neck differentiation — that distinguish a cervicogenic concussion presentation from a purely central one.

While the field still needs large randomized trials specifically on upper cervical chiropractic technique, the convergent message across rehabilitation literature is consistent: when you address the neck, the brain has a much easier time recovering.

What this looks like in practice is patient by patient. A marathoner who can finally sleep through the night three weeks after her atlas is corrected. A high school lacrosse player who returns to class without sunglasses for the first time in four months. A finance professional who stops cancelling client meetings because the brain fog has lifted. None of these stories are guarantees, and upper cervical care is not a replacement for neurology, vestibular therapy, or vision therapy. It is, however, a structural piece of the puzzle that is too often left untouched — and when it is the missing piece, the difference can be remarkable.

If you have had a concussion in the last several months — from a sports collision, a motor vehicle accident, a fall on icy sidewalks, or a bike crash — and your symptoms have not fully resolved, the upper cervical spine deserves a look. Recovery is rarely linear, and the brain is doing its part. Sometimes it just needs the neck to get out of the way.

New York Upper Cervical Chiropractic is located in Great Neck, NY, on Long Island, serving patients traveling from across the region and beyond. Whether you are searching for an upper cervical chiropractor on Long Island, a local chiropractor in Great Neck, an atlas adjustment, or post-concussion syndrome care after a sports injury or car accident, our office offers gentle, precision-based corrections to the craniocervical junction. We also work with patients managing migraines, vertigo, TMJ disorder, tinnitus, cervicogenic headaches, whiplash, dysautonomia, POTS, fibromyalgia, and trigeminal neuralgia — conditions that often share a common upper cervical root.

FAQs

How is upper cervical chiropractic different from regular chiropractic for a concussion? - Upper cervical care is a precision approach focused only on the atlas and axis vertebrae at the base of the skull. There is no twisting or cracking. Imaging is used to measure misalignment to within a fraction of a degree, and the correction is delivered with very light, specific force. That precision matters in concussion recovery because the brainstem and surrounding neurology are already sensitized and tolerate aggressive techniques poorly.

How long after a concussion can I start upper cervical care?

Most clinicians wait until acute medical clearance has been given and bleeding or fracture has been ruled out. After that, there is no fixed waiting period — many patients begin within the first few weeks, while others come in months or years after the original injury. Upper cervical correction has helped patients with PCS symptoms persisting five, ten, and even twenty years after the initial event.

Will an adjustment make my symptoms worse?

A properly performed upper cervical correction is gentle enough that most patients feel little more than light pressure. Some people experience a brief uptick in symptoms in the day or two after their first correction as the nervous system recalibrates — sometimes called a "retracing" response — but this is typically mild and short-lived. Aggressive twisting maneuvers should not be performed on a recently concussed patient, which is part of why upper cervical specificity matters so much.

Do I still need to see a neurologist or vestibular therapist?

Often yes. Upper cervical care is a structural complement to medical and rehabilitative concussion care, not a replacement for it. The best outcomes typically come from a coordinated team — neurology, vestibular therapy, vision therapy, and upper cervical chiropractic — addressing different layers of the same complex injury.

How many visits does it usually take to see improvement in PCS symptoms?

Every case is different, but many patients begin to notice changes — often in headaches, sleep, or brain fog first — within the first three to six visits. Longer-standing or more complex cases require more time, and care is typically tapered as stability improves so that adjustments are needed less and less frequently.

New York Upper Cervical Chiropractic

📍 505 Northern Blvd, Suite 309, Great Neck, NY 11021

📞 516) 969-3330

@ drjaewonlee | @newyorkucc

References

1. Marshall CM, Vernon H, Leddy JJ, Baldwin BA. The role of the cervical spine in post-concussion syndrome. Phys Sportsmed. 2015;43(3):274-284.

2. Schneider KJ, Meeuwisse WH, Nettel-Aguirre A, et al. Cervicovestibular rehabilitation in sport-related concussion: a randomised controlled trial. Br J Sports Med. 2014;48(17):1294-1298.

3. Ellis MJ, Leddy J, Willer B. Multi-disciplinary management of athletes with post-concussion syndrome: an evolving pathophysiological approach. Front Neurol. 2016;7:136.

4. Ellis MJ, Leddy JJ, Willer B. Physiological, vestibulo-ocular and cervicogenic post-concussion disorders: an evidence-based classification system with directions for treatment. Brain Inj. 2015;29(2):238-248.

5. Treleaven J, Jull G, Sterling M. Dizziness and unsteadiness following whiplash injury: characteristic features and relationship with cervical joint position error. J Rehabil Med. 2003;35(1):36-43.

6. Treleaven J. Sensorimotor disturbances in neck disorders affecting postural stability, head and eye movement control. Man Ther. 2008;13(1):2-11.

7. Kennedy E, Quinn D, Tumilty S, Chapple CM. Can the neck contribute to persistent symptoms post concussion? A prospective descriptive case series. J Orthop Sports Phys Ther. 2019;49(11):845-854.

8. Reneker JC, Hassen A, Phillips RS, Moughiman MC, Donaldson M, Moughiman J. Feasibility of early physical therapy for dizziness after a sports-related concussion: a randomized clinical trial. Scand J Med Sci Sports. 2017;27(12):2009-2018.

9. Cheever K, Kawata K, Tierney R, Galgon A. Cervical injury assessments for concussion evaluation: a review. J Athl Train. 2016;51(12):1037-1044.

10. Leddy JJ, Baker JG, Willer B. Active rehabilitation of concussion and post-concussion syndrome. Phys Med Rehabil Clin N Am. 2016;27(2):437-454.

11. Moore J. Chiropractic management of the craniocervical junction in post-concussion syndrome: a case series. Journal of Contemporary Chiropractic. 2019.