Could sudden neck pain and dizziness mean a torn artery? Learn what vertebral artery dissection is and why quick care matters.

Have you ever felt a sharp pain in one side of your neck, a pounding headache, or sudden blurry vision? While it is easy to brush these off as everyday muscle strain, they can sometimes point to a more serious underlying issue.

One such condition is known as a vertebral artery dissection. This medical term might sound intimidating, but understanding what it means can help you recognize warning signs and seek the right care.

This guide breaks down everything you need to know about vertebral artery dissection in simple, everyday language. We will explore what causes it, how doctors diagnose it, and what treatment options look like.

What Is a Vertebral Artery Dissection?

Simply put, a vertebral artery dissection happens when one of the blood vessels carrying blood up your neck and into your brain tears from the inside. Much like a piece of fabric tearing down the middle, the walls of the blood vessel split apart.

While strokes are often associated with older adults, this particular type of tear is a rare cause of stroke that most commonly affects younger adults under the age of 45.

What Is a Vertebral Artery?

Think of the two blood vessels running up the back of your neck along your spine as your vertebral arteries. Their main job is to supply oxygen-rich, clean blood to your brain and spinal cord.

Just like a water pipe, these blood vessels have distinct layers:

• Intima: This is the innermost layer closest to the flowing blood.
• Media: This is the middle muscular layer that helps keep blood flowing in one direction.
• Adventitia: This is the outer layer that gives the blood vessel its shape and strength.

How Does This Dissection Affect Your Health?

When an inner layer of the artery tears, blood starts to leak between the intima and the media layers. This blood collects and can bulge outward like a small balloon.

The trapped blood can also form a blood clot, which blocks normal blood flow through the artery or causes the vessel to swell.

The most serious result of this blood flow disruption is a stroke:

• Ischemic stroke: This happens when the blood clot grows large enough to block blood flow to the brain entirely, or when a piece breaks off and travels up into a smaller blood vessel.
• Hemorrhagic stroke: This occurs if all three layers of the artery wall tear through. Blood then leaks outside the vessel instead of reaching the brain. If this tear reaches deep inside the brain or surrounding spaces, it is called a subarachnoid hemorrhage.

Who Is Most at Risk for Vertebral Artery Dissection?

Sometimes, this condition happens with no clear cause at all. However, certain health conditions can increase your risk:

• Smoking: Regular cigarette use weakens blood vessels.
• Genetic conditions: Rare disorders like cystic medial necrosis, Ehlers-Danlos syndrome, Marfan syndrome, or osteogenesis imperfecta can make artery walls fragile.
• Fibromuscular dysplasia: A condition causing abnormal cell growth inside your arteries.
• High blood pressure: Chronic high blood pressure strains your artery walls.
• Polycystic kidney disease: A genetic condition involving fluid-filled kidney cysts.
• Vasculitis: Inflammation of your blood vessels.

Other Risk Factors and Neck Injuries.

Physical injuries to the neck can also trigger a dissection. This is especially true when your neck is held in an overextended position or jerked suddenly:

• Car accidents.
• Certain neck treatments, such as chiropractic adjustments or deep tissue neck massage.
• Straining forcefully to clear mucus from your throat.
• Yoga poses that require keeping your neck tilted backward for a long time.
• Working overhead for long periods, like painting a ceiling.
• Cardiopulmonary resuscitation (CPR) chest compressions.
• Sneezing or coughing extremely hard.
• Vomiting violently.
• Contact sports like wrestling.
• Heavy weight lifting.
• Any other trauma to the neck.

Can Other Artery Dissections Cause Strokes?

Yes. Doctors use the term cervical artery dissection to describe any tear in the neck arteries. This includes the vertebral arteries as well as the carotid arteries running up the front sides of your neck.

A tear in any of these major blood vessels can reduce blood flow to your brain and potentially lead to a stroke.

What Is the Actual Risk of Stroke?

Overall, vertebral or carotid artery dissections are responsible for only a small percentage of all strokes. Most ischemic strokes are caused by atherosclerosis, where plaque builds up over time due to smoking, high cholesterol, diabetes, and high blood pressure.

However, vertebral artery dissection is a leading cause of stroke in younger and middle-aged adults, accounting for up to 25% of strokes in this age group.

What Are the Symptoms of Vertebral Artery Dissection?

In the early stages, you might not notice any symptoms at all. But if blood flow to your brain drops or a clot forms, you may experience stroke warning signs.

Watch out for these symptoms:

• Ataxia: Trouble keeping your balance when walking or standing, or clumsiness with your hands.
• Dizziness or lightheadedness.
• Hearing loss in one ear.
• Double vision or trouble seeing clearly.
• Neck pain, usually on just one side.
• A severe, sudden headache.
• Slurred speech or trouble talking.
• Vertigo, a spinning sensation.

How Do Doctors Diagnose Vertebral Artery Dissection?

The gold standard test for diagnosing this condition is a Magnetic Resonance Angiography (MRA). This scan combines a standard MRI machine with special imaging techniques to create detailed pictures of your vertebral arteries.

If an MRA is not readily available, doctors often use a Computed Tomography (CT) scan or a CT angiography to check your blood vessels quickly in an emergency room setting.

In some cases, your doctor may suggest a conventional angiography. During this test, a thin tube called a catheter is guided through a blood vessel in your wrist or groin up to your neck. A safe contrast dye is injected so X-ray images can show blood flow and pinpoint the exact tear.

How Is It Treated?

Many artery dissections heal on their own over time. To lower your risk of blood clots while healing, doctors often prescribe blood-thinning medicines.

Common options include daily aspirin, other antiplatelet drugs like Plavix®, or blood thinners like heparin or warfarin.

Note: If the tear has caused bleeding inside the brain or led to a hemorrhagic stroke, blood thinners are unsafe. Your medical team will choose alternative treatments in these cases.

What If Standard Treatments Are Not Enough?

If medicines do not stop the problem, or if you experience a hemorrhagic stroke, doctors may recommend a specialized medical procedure:

• Endovascular embolization: A doctor guides thin catheters through your blood vessel to the site of the tear. They then insert tiny metal coils or special embolic agents to seal off the damaged portion of the artery.
• Angioplasty: Using catheter tools, a tiny balloon is inflated inside the artery to gently widen and repair the torn area.
• Intracranial stenting: A tiny mesh tube (stent) is placed inside the artery to prop open the vessel wall and restore steady blood flow.
• Surgery: When catheter procedures are not possible, surgeons may use tiny metal clips to close off the damaged section of the artery.

What Is the Recovery Outlook?

The good news is that most people make a full recovery. While you may carry a slightly higher risk of future tears, that risk decreases steadily over time.

Living With a Vertebral Artery Dissection.

Your care team will monitor your healing closely until they confirm the artery is stable. They will likely schedule follow-up MRA scans every three to six months and keep you on blood-thinning medicine during that time.

If you have risk factors that suggest a higher chance of future tears, you may need ongoing medical checkups for years.

What Should You Avoid During Recovery?

While light exercise is often encouraged, your doctor will likely ask you to avoid activities that strain your neck or spike your blood pressure:

Take-Home Message.

A vertebral artery dissection is a tear in the wall of a vital blood vessel in your neck. While it rarely leads to a stroke, prompt medical care—often using blood thinners or specialized procedures—can protect your health and save lives.

If you notice any of the warning signs described in this guide, reach out to your doctor right away or visit the nearest emergency room.

Sources & References:

• Mayo Clinic. Cervical Artery Dissection: Symptoms and Causes.
• Cleveland Clinic. Vertebral Artery Dissection Overview.
• National Health Service (NHS UK). Stroke and Artery Dissection Information.
• Centers for Disease Control and Prevention (CDC). Stroke Signs and Symptoms.
• National Institutes of Health (NIH / PubMed). Management and Prognosis of Cervical Artery Dissection.