Ross Hauser, MD

Some patients come to us after repeated episodes of heart palpitations, rapid heart rate, blood pressure swings, dizziness, or near-fainting. They may have visited an emergency department or undergone an electrocardiogram, echocardiogram, ambulatory heart monitoring, and other cardiac testing without receiving a complete explanation for why their symptoms continue.

These experiences are real and can be frightening. They also require an important safety-first message: chest pain, fainting, a new or sustained irregular heartbeat, shortness of breath, or other concerning cardiovascular symptoms should be evaluated promptly by a qualified medical professional. A neck-related explanation should never be assumed before potentially dangerous heart, vascular, endocrine, medication-related, and neurological causes have been considered.

In the accompanying video, we use the term cervical cardiopathy to describe a proposed relationship between structural problems in the cervical spine—the neck—and cardiovascular-like symptoms. The term is descriptive and is not a universally accepted cardiology diagnosis. Our clinical interest is in a selected group of patients who have both neck dysfunction and symptoms suggesting altered autonomic regulation.

The autonomic nervous system regulates functions that normally occur without conscious effort, including heart rate, blood pressure, breathing, and digestion. Its involvement in atrial fibrillation and other rhythm disorders is well established. Both sympathetic and parasympathetic activity can influence the electrical properties of the atria and may help trigger or sustain atrial fibrillation in susceptible patients. (1)

What remains uncertain is whether cervical instability or abnormal cervical alignment can impair these autonomic pathways enough to produce clinically meaningful cardiac symptoms. That is the hypothesis explored in this article.

What the Cervical Cardiopathy Video Explains

The video begins by defining the term: “cervical” refers to the neck, “cardio” to the heart, and “pathy” to disease or dysfunction. The central proposal is that nerves involved in cardiovascular regulation travel through the neck and may, in some patients, be affected by abnormal cervical mechanics.

In the video, we discuss patients with dizziness, tachycardia, blood pressure changes, palpitations, postural orthostatic tachycardia syndrome (POTS), or intermittent arrhythmias despite a cardiac evaluation that did not identify a structural heart problem. We focus particularly on the vagus and glossopharyngeal nerves and introduce heart rate variability as one part of an autonomic assessment.

The video also presents Caring Medical’s clinical approach: first determine whether there is objective evidence of cervical instability, altered cervical curvature, or another structural neck problem; then consider whether the timing and provocation of symptoms make a cervical contribution plausible. Treatment may include individualized posture and cervical-curve rehabilitation. In selected patients with ligament injury and instability, Prolotherapy may be discussed as an orthopedic treatment intended to support injured ligaments.

These ideas should be interpreted as a clinical framework and research hypothesis—not proof that a neck disorder caused a patient’s arrhythmia or that cervical treatment will resolve a heart condition.

How the Brain, Vagus Nerve, and Glossopharyngeal Nerve Regulate the Heart

The heart is influenced by a continuous conversation between the cardiovascular system and the brainstem. The sympathetic nervous system generally helps the body respond to physical or emotional demand by increasing heart rate and vascular tone. Parasympathetic activity, carried substantially through the vagus nerve, can slow the sinus node and influence electrical conduction through the heart.

Blood-pressure regulation also depends on the baroreflex. Baroreceptors are stretch-sensitive pressure sensors located primarily in the carotid sinus and aortic arch. Signals from the carotid sinus travel mainly through the glossopharyngeal nerve, while signals from the aortic arch travel through the vagus nerve. These messages reach the brainstem, which adjusts sympathetic and parasympathetic output to help stabilize blood pressure and heart rate. Injury or dysfunction affecting these afferent pathways can produce marked blood pressure variability in recognized neurological disorders. (2)

This physiology supports the general concept that abnormal neural signaling can create cardiovascular symptoms. It does not, by itself, establish that ordinary cervical degeneration, loss of lordosis, or ligament laxity compresses these nerves or causes arrhythmia.

Autonomic Dysfunction and Atrial Fibrillation

The autonomic nervous system can participate in atrial fibrillation, but the relationship is more complex than simply having “too little” or “too much” vagal activity. Sympathetic activation, parasympathetic activation, or a combination of both may help initiate atrial fibrillation depending on the person and the underlying cardiac substrate. (1)

The phrase vagally mediated atrial fibrillation is generally used for a clinical pattern in which episodes tend to occur during rest, sleep, after meals, or in other circumstances associated with parasympathetic predominance. It does not mean that the vagus nerve has necessarily been compressed in the neck. Atrial fibrillation remains a potentially serious condition associated with stroke and other complications, and its evaluation and treatment belong under the supervision of a cardiologist or electrophysiologist.

An observational population study published in 2018 reported an association between cervical spondylosis and a higher incidence of arrhythmia. The study used health-insurance data and could not establish why the association occurred or prove that the cervical condition caused the rhythm disorder. Confounding factors and diagnostic coding are important limitations. (3)

This study is interesting because it supports further investigation of cervical and autonomic relationships. It should not be interpreted as evidence that correcting a neck problem treats atrial fibrillation.

Heart Rate Variability

Heart rate variability, or HRV, describes variation in the time interval between consecutive heartbeats. A healthy heart does not beat like a metronome. Beat-to-beat timing changes with breathing, posture, activity, sleep, stress, medication use, age, illness, and autonomic input.

At the Hauser Neck Center, HRV may be considered alongside a patient’s symptoms and other findings. Certain HRV measurements—especially respiratory-linked measures collected under standardized conditions—can provide information related to parasympathetic cardiac modulation. However, HRV is not a direct measurement of the cervical vagus nerve, and a low value does not prove vagus-nerve compression or cervical instability.

Current methodological guidance emphasizes that HRV is affected by respiration, recording duration, body position, time of day, physical fitness, medications, cardiac rhythm, and data-processing choices. For that reason, it should be interpreted cautiously and in context rather than labeled simply as “vagal tone.” (4)

This distinction is especially important in atrial fibrillation, frequent ectopy, paced rhythms, or poor-quality recordings, where conventional HRV interpretation may be unreliable.

Could Cervical Instability Affect Autonomic Signaling?

The vagus nerves descend from the skull base through the carotid sheaths on both sides of the neck. Each carotid sheath contains the carotid artery, internal jugular vein, and vagus nerve within a confined anatomical region. Because these structures lie in front of the upper cervical spine, we propose that abnormal position or excessive motion of cervical structures could, in a subset of patients, create tension or dynamic compression affecting the neurovascular contents of the neck.

In our 2025 paper, we described the term cervicovagopathy and presented cervical structural measurements, internal jugular vein measurements, and vagus-nerve cross-sectional-area measurements from our retrospective chart review of 234 consecutive patients evaluated at our outpatient neck center. We proposed that cervical instability and dysstructure may contribute to vagus-nerve dysfunction. Because our study was retrospective, involved a selected clinic population, and did not include a randomized treatment comparison, we consider these findings hypothesis-generating; they do not prove causation. (5)

In our 2026 single-center retrospective study of 84 patients with hypermobile Ehlers-Danlos syndrome, we similarly reported frequent co-occurrence of abnormal cervical structural findings and reduced internal jugular vein and vagus-nerve cross-sectional measurements. Our study provides additional observational data from a highly selected population, but it cannot determine whether the cervical findings caused cardiovascular or autonomic symptoms. (6)

Our broader published hypothesis proposes that cervical ligament injury, forward-head posture, and loss of the normal cervical curve may alter neural signaling or the movement of blood and cerebrospinal fluid through the neck. (7) These proposed mechanisms require independent replication and prospective clinical research.

When Might We Consider a Cervical Contribution?

After appropriate medical evaluation, a cervical contribution may merit consideration when several features occur together:

• Palpitations, dizziness, presyncope, or blood pressure changes are reproducibly associated with neck position or neck-pain flares.
• Symptoms began after whiplash, repetitive strain, prolonged forward-head posture, or another cervical injury.
• The patient also has neck pain, headaches, neck clicking, reduced range of motion, disequilibrium, swallowing symptoms, or other complaints that change with head position.
• Standard cardiac evaluation has not fully explained the episodes.
• Examination and appropriate imaging demonstrate a cervical abnormality that plausibly corresponds with the clinical history.

None of these features is diagnostic. Positional symptoms can also occur with vestibular disorders, orthostatic intolerance, medication effects, anxiety and panic disorders, vascular conditions, or other neurological disease.

Medical Evaluation

Depending on the symptoms, conventional evaluation may include an electrocardiogram, echocardiogram, ambulatory rhythm monitoring, exercise testing, orthostatic vital signs, laboratory testing, or referral to cardiology, electrophysiology, neurology, or an autonomic specialist.

Common alternative explanations include atrial fibrillation or another primary arrhythmia, structural heart disease, coronary disease, anemia, dehydration, thyroid disease, electrolyte abnormalities, infection, sleep apnea, medication or stimulant effects, POTS, vasovagal syncope, panic episodes, and adverse effects from alcohol or recreational substances.

Call emergency services for chest pressure or pain, severe shortness of breath, fainting, symptoms of stroke, a sustained rapid or irregular heartbeat with weakness or lightheadedness, or any new symptom that may represent a cardiac emergency. A normal test in the past does not guarantee that a new episode is harmless.

How We Evaluate the Cervical Spine at Caring Medical

When a patient has completed appropriate medical evaluation and the history suggests a possible neck component, we perform a detailed assessment rather than assuming that every autonomic symptom comes from cervical instability.

The evaluation may include posture, cervical alignment, range of motion, neurological findings, ligament stress, and whether symptoms change with carefully controlled position. When clinically appropriate, we may use digital motion X-ray to evaluate motion patterns, upright cone-beam CT to assess bony alignment, musculoskeletal ultrasound to visualize soft tissues and the carotid sheath region, and heart rate variability testing as one component of autonomic assessment.

These tests answer different questions. No single measurement proves that cervical instability is responsible for palpitations or an arrhythmia. Findings must be interpreted together with the history, examination, and conventional medical workup.

Treatment

Treatment should be directed first at established diagnoses. A patient with atrial fibrillation, hypertension, POTS, or another cardiovascular disorder should continue appropriate specialist care. Cervical treatment is not a substitute for anticoagulation, rhythm management, blood-pressure therapy, or emergency assessment when those are indicated.

For a documented musculoskeletal neck problem, conservative care may include individualized physical therapy, ergonomic changes, graded strengthening, and carefully selected cervical curve rehabilitation. Treatment should be modified when instability, neurological compromise, vascular disease, or connective-tissue disorder is suspected.

At Caring Medical, Prolotherapy may be considered for selected patients when the clinical target is painful ligament injury or cervical instability. The intent is orthopedic: to stimulate a repair response at injured ligament attachments and improve joint stability. Published literature discusses Prolotherapy for chronic musculoskeletal pain and cervical instability, but the cervical evidence base is limited and includes older observational work, small studies, and narrative reviews. (8)

There are no high-quality randomized controlled trials demonstrating that cervical Prolotherapy treats atrial fibrillation, POTS, hypertension, or another cardiac disease. If cardiovascular-like symptoms improve while a patient’s neck function improves, that observation may support further study, but it does not establish that the treatment repaired a vagus nerve or cured a heart disorder.

Similarly, a 2024 systematic review found low-quality evidence that spinal manipulation did not alter autonomic nervous-system measures overall, although a cervical subgroup signal was reported for one high-frequency HRV parameter. The authors emphasized methodological weaknesses and the need for caution. (9) This evidence does not validate aggressive cervical manipulation for cardiac symptoms.

Summary

The video’s central message is that the neck contains important neural and vascular structures involved in cardiovascular regulation. Established physiology confirms that the vagus nerve, glossopharyngeal nerve, brainstem, sympathetic system, and baroreflex participate in controlling heart rate and blood pressure. Autonomic dysregulation also plays a recognized role in atrial fibrillation.

The more specific proposal—that ligamentous cervical instability or loss of cervical curvature can mechanically impair these pathways and generate cardiovascular symptoms—remains under investigation. Caring Medical’s published studies offer observational and hypothesis-generating findings, not definitive proof of causation or treatment effectiveness.

For a patient whose symptoms remain unexplained after an appropriate cardiac and medical workup, especially when those symptoms occur with neck pain, injury, or position-dependent changes, a careful cervical evaluation may provide another piece of the diagnostic picture. Our goal is to identify objective findings, remain within the limits of the evidence, and determine whether a patient’s neck warrants treatment for its own documented structural or musculoskeletal problems.

References

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Medical disclaimer: This article is for educational purposes and is not a substitute for diagnosis or treatment by a qualified healthcare professional. Cardiovascular symptoms can represent a medical emergency. Treatments discussed may not be appropriate or effective for every patient, and no guarantee of outcome is made.