Cervical Spine and Concussion: Why Your Neck May Be Driving Your Symptoms

You took a hit, you got diagnosed with a concussion, and weeks later you still have headaches, dizziness, and brain fog. The assumption is that these are all brain problems. But here is the thing. The forces that cause a concussion are more than enough to injure the neck at the same time. And when the cervical spine is injured, it can produce symptoms that look exactly like a concussion that will not go away.

This is one of the most common and most overlooked patterns in persistent concussion symptoms. At Complete Concussions, cervical spine assessment is a core part of how we evaluate and treat patients who are not recovering on the expected timeline. The reason is simple: if the neck is driving symptoms and no one is looking at the neck, those symptoms are not going to resolve no matter how much rest or cognitive rehab someone does.

This article breaks down why the cervical spine matters so much in concussion, what the research says, how clinicians assess for it, and what effective treatment looks like.

Why Does the Cervical Spine Get Injured During a Concussion?

The cervical spine gets injured during a concussion because the forces involved are far greater than what is needed to strain the neck. A concussion typically requires between 70 and 120 G-forces of acceleration to the head [1]. A cervical sprain or strain can occur at as little as 4.5 G-forces [2]. So any mechanism strong enough to cause a concussion is also strong enough to cause a whiplash-type injury to the neck. The two injuries almost always coexist.

This is a critical point that gets missed too often. Whiplash and concussion are not two separate problems that occasionally overlap. They are two consequences of the same event. When the head accelerates, the neck accelerates with it. The muscles, ligaments, joints, and proprioceptive structures of the upper cervical spine absorb enormous forces during the same impact that causes the brain injury.

A 2021 systematic review by Gil and colleagues confirmed this overlap, finding that whiplash and mild traumatic brain injury share so many symptoms and mechanisms that the two conditions may exist on a spectrum rather than being cleanly separable [3]. A large mixed-method review of over 100,000 whiplash patients found that whiplash symptoms extend well beyond neck pain alone and include headache, sleep difficulty, fatigue, dizziness, irritability, anxiety, depression, visual problems, and concentration issues [4]. If you removed the label, many clinicians could not tell the difference between a whiplash patient and a concussion patient based on symptoms alone.

What Symptoms Can the Cervical Spine Produce After Concussion?

The cervical spine can produce a surprisingly wide range of symptoms that most people associate with the brain, not the neck. These include headache, dizziness, imbalance, nausea, visual disturbance, concentration difficulty, brain fog, eye movement abnormalities, and movement intolerance.

The reason the neck can cause all of these is anatomy. The upper cervical region contains a dense concentration of proprioceptive organs in the facet joints and surrounding muscles. These proprioceptors constantly relay information to the brain about where the head is in space. That information gets integrated with input from the vestibular system in the inner ear and visual input from the eyes. When all three systems agree, balance and spatial orientation feel normal. When the neck is sending distorted position data because of injury, the brain receives mismatched information, and the result is dizziness, visual instability, and a feeling of being off-balance.

This three-input model is foundational to understanding cervicogenic symptoms: balance depends on agreement between vestibular input, visual input, and cervical proprioceptive input. If any one of those three is sending bad data, the system breaks down.

There is also a well-established connection between the cervical spine and headaches. The trigeminocervical nucleus is a relay station where pain signals from the upper cervical structures converge with signals from the head and face. This is why injury or tension in the suboccipital muscles, the sternocleidomastoid, or the upper cervical facet joints can produce headaches that feel like they are inside the skull, even though the actual source is the neck [5]. Post-traumatic headaches are often reflexively labeled as migraine when the pattern and behavior suggest cervicogenic origin.

What Does the Research Say About Cervical Involvement in Concussion?

The evidence base supporting cervical spine involvement in concussion has grown considerably in recent years. While much of the cervical rehabilitation literature is not concussion-specific, several key studies directly connect cervical dysfunction to concussion outcomes.

A 2025 CARE Consortium study of 1,675 NCAA athletes found that 47% reported neck pain following concussion [6]. For every one-unit increase in neck pain severity, the odds of returning to play decreased by 4.7%. This effect held regardless of sex, sport contact level, or race. Neck pain was not background noise. It was an independent predictor of delayed recovery.

Majcen Rosker and colleagues (2023) compared cervical sensorimotor findings across concussion patients, whiplash patients, idiopathic neck pain patients, and healthy controls [7]. All three symptomatic groups showed impairment on cervical kinaesthesia and smooth pursuit neck torsion testing compared to controls. Importantly, there were no meaningful differences between the concussion group and the other two symptomatic groups on these measures. This supports the idea that concussion commonly includes a cervical sensorimotor component that deserves active assessment.

A 2025 scoping review by Gulla and colleagues examined the cervical rehabilitation literature relevant to concussion and found that while 149 studies addressed cervical rehabilitation broadly, only 9 directly involved concussion patients [8]. Manual therapy and exercise were the most frequently studied interventions, and multimodal approaches combining cervical and vestibular rehabilitation appeared most promising.

On the treatment side, a systematic review and meta-analysis by De Vestel and colleagues (2022) found moderate-quality evidence that manual therapy reduces dizziness, cervical dysfunction, and balance problems in cervicogenic dizziness, with even better outcomes when combined with exercise [9]. A separate meta-analysis of cervicogenic headache treatment found that manual and exercise therapy reduced headache intensity, frequency, and disability, though most included studies had high risk of bias [10].

A 2025 perspective review on cervicogenic dizziness emphasized that the condition remains a diagnosis of exclusion without a gold-standard test but proposed that altered cervical proprioception interacting with vestibular and visual systems is the central mechanism, and that manual therapy combined with sensorimotor rehabilitation represents the most promising management approach [11].

If you have been dealing with headaches, dizziness, or brain fog for weeks or months without a clear explanation, a Complete Concussions certified clinician near you can assess whether the cervical spine is driving those symptoms and build a targeted plan around what is actually causing them.

How Do Clinicians Assess the Cervical Spine After Concussion?

Assessment starts with ruling out structural red flags. The Canadian C-Spine Rules provide validated criteria for identifying fracture risk after trauma, with a sensitivity of 99.4% [12]. Ligamentous integrity tests, including the alar ligament test and Sharp-Purser test, evaluate spinal stability before any manual treatment begins.

Once red flags are cleared, assessment focuses on two main areas: musculoskeletal injury and proprioceptive dysfunction.

For musculoskeletal injury, clinicians evaluate cervical range of motion, palpate for tenderness and muscle spasm, and use specific tests to differentiate headache subtypes. A cluster of tests including the cervical flexion-rotation test, smooth pursuit neck torsion test, and cervical joint position error test has shown strong diagnostic accuracy for identifying cervicogenic contributions [13,14].

For proprioceptive dysfunction, the cervical joint position error test assesses the accuracy of upper cervical muscle spindles, while the smooth pursuit neck torsion test evaluates cervico-ocular interaction. These tests help distinguish whether dizziness and balance problems are being driven by the neck, the vestibular system, or both.

One deep clinical pearl for the clinicians reading this: if dizziness appears when the neck is extended in standing but disappears when the patient is lying down, posterior canal BPPV becomes less likely and cervical involvement becomes more likely. This kind of positional testing helps narrow down the true source of symptoms.

This is the kind of systematic assessment framework built into the Complete Concussions Training Program, where clinicians learn to identify specific symptom drivers and apply targeted treatment from their next appointment, without years of specialty training to get there.  If you want to become an expert in concussion management and treatment of complex concussion cases, take a peek at our Concussion Certification Courses.

What Does Effective Cervical Spine Treatment Look Like?

The goal of cervical spine treatment after concussion is to restore normal cervical biomechanics and proprioceptive function. The Complete Concussions clinical model follows a clear sequence: treat the tissue dysfunction first, then rebuild proprioception, then add stabilization.

Manual therapy is the starting point. This includes soft tissue work, joint mobilization or manipulation, dry needling, and trigger point therapy targeting the specific structures that reproduce the patient’s symptoms. The suboccipital muscles are frequently involved and are strongly tied to eye movement dysfunction. The sternocleidomastoid contributes to headaches, dizziness, and facial referral patterns. The deep neck flexors play a role in extension-related dizziness.

The key clinical strategy is to identify the neck positions that worsen symptoms, determine which tissues are loaded in those positions, treat those tissues, and then retest immediately. If treatment reproduces and then resolves the patient’s symptoms, it confirms the cervical driver.

Once manual therapy has reduced the primary tissue dysfunction, treatment progresses to proprioceptive retraining. Cervical joint position error testing can be used both as assessment and rehabilitation. Smooth pursuit exercises with neck torsion, walking with head turns, and laser-based head position retraining all help rebuild the accuracy of cervical proprioceptive input.

Stabilization exercises come last, after function has improved. An important clinical consideration is that some visual dysfunction will not fully normalize if cervical dysfunction is still distorting proprioceptive input. This is one reason why interprofessional collaboration between cervical specialists, vestibular therapists, and vision therapists produces better outcomes than any single discipline working alone [15].

Why Treatment Sequencing Matters

One of the most important practical points is that cervical treatment does not exist in isolation. Treatment order matters a great deal. Jumping straight into physical rehabilitation, including neck work, vestibular exercises, and vision therapy, can backfire in patients who are still highly dysregulated. If the nervous system is hyperaroused, the patient is sleep-deprived, or there is significant fear avoidance, physical rehab often feels too intense and produces setbacks.

The Complete Concussions framework starts with education, reassurance, and foundational regulation. Only after those pieces are underway does treatment progress into exertional testing, targeted exercise prescription, and then cervical, vestibular, and visual rehabilitation. The neck is almost always part of the picture, but it is not always the first thing to address.

The Bottom Line

The cervical spine is one of the most common and most overlooked drivers of persistent symptoms after concussion. Neck dysfunction can produce headaches, dizziness, brain fog, visual disturbance, and balance problems that are clinically indistinguishable from brain-driven symptoms. The research increasingly shows that cervical involvement is the rule rather than the exception after concussion, and that targeted cervical treatment produces meaningful improvement when applied correctly.

If you have been struggling with symptoms that are not improving, especially headaches, dizziness, or feeling off-balance, and no one has thoroughly assessed your neck, that may be the missing piece. A Complete Concussions certified clinician can evaluate the specific systems driving your symptoms and build a treatment plan that addresses what is actually going on.

Frequently Asked Questions

Can a neck injury cause the same symptoms as a concussion?

Yes. The cervical spine can produce headaches, dizziness, brain fog, visual disturbance, nausea, and balance problems that are clinically very similar to concussion symptoms. This happens because the upper cervical region sends proprioceptive data to the brain that gets integrated with vestibular and visual input. When the neck is injured, it can send distorted signals that create symptoms people typically associate with the brain itself.

How common is neck pain after a concussion?

Very common. A large study of over 1,600 NCAA athletes found that 47% reported neck pain following concussion. Neck pain severity was an independent predictor of delayed return to play, meaning it was not just a side complaint but a meaningful factor in recovery.

How do I know if my dizziness is coming from my neck or my inner ear?

Specific clinical tests can help differentiate the source. The smooth pursuit neck torsion test and cervical joint position error test assess whether the neck is contributing to dizziness. A clinical pearl is that dizziness that appears during upright neck extension but disappears when lying down points more toward the cervical spine than the vestibular system. A thorough assessment by a trained clinician can identify which system is the primary driver.

What kind of treatment helps cervical spine problems after concussion?

Effective treatment typically starts with skilled manual therapy targeting the specific structures that reproduce symptoms, including soft tissue work, joint mobilization, and dry needling. Once the primary tissue dysfunction improves, treatment progresses to proprioceptive retraining exercises and then cervical stabilization. Research supports manual therapy combined with exercise as the most effective approach for cervicogenic dizziness and headache.

Should the neck always be treated first after a concussion?

Not necessarily. While cervical assessment should happen early, treatment sequencing depends on the patient’s overall presentation. Patients who are highly dysregulated, sleep-deprived, or dealing with significant anxiety may need foundational regulation and education before physical rehabilitation begins. The neck is almost always part of the treatment picture, but it is not always the first priority.