Cervical artery dissection occurs when there’s a tear in a carotid or vertebral artery. These arteries provide oxygen-rich blood to your brain. A dissection makes it possible for blood clots to form. Potential complications include stroke. Treatment typically includes medications to prevent blood clots.
Cervical artery dissection happens when there’s a tear in one or more layers of blood vessel tissue. Cervical artery dissection is a common cause of stroke in young and middle-aged adults.
Your cervical arteries are a group of large blood vessels in your neck. They include the carotid arteries (which supply the front part of your brain) and vertebral arteries (which supply the back of your brain and your spine).
With a carotid artery dissection, the inner lining of the blood vessel tears. At the site of the tear, blood can clot. If the blood clot breaks loose, it can travel to your brain, block off blood vessels and limit blood flow, resulting in an ischemic stroke.
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Injury to your head or neck (from a car accident or similar trauma) is the most common cause of dissection. Non-traumatic dissections can occur due to straining or heavy lifting in some people.
Examples of genetic conditions that affect connective tissue throughout your body include:
Neck sprain and injuries can occur due to:
Illnesses that cause straining can lead to cervical artery dissection. These include:
Additional conditions that put you at risk include:
Many people start noticing symptoms up to a month before receiving a cervical artery dissection diagnosis. There are three main types, including:
You may experience head or neck pain not related to an existing health issue. Discomfort typically:
This condition affects the involuntary function of your eyes and face. Symptoms include drooping eyelids, a smaller pupil in one eye and a lack of sweating. Horner's syndrome typically impacts only one side of your head.
These cervical artery dissection symptoms occur when part of your brain isn’t getting enough blood. They include:
Cervical artery dissection can be challenging to detect, but certain symptoms should raise a healthcare provider’s suspicion. You should inform your healthcare provider if you develop any of the symptoms mentioned above.
Computed tomography angiography (CTA) or magnetic resonance angiography (MRA) are good methods for detecting a dissection. These techniques take specific pictures of your blood vessels.
Dissections often heal on their own. Medical therapies can lower your risk of blood clots that can lead to stroke.
You may need:
Occasionally, procedures like stenting are necessary. Stenting uses a mesh device to reinforce and expand blood vessel walls.
If you have an underlying condition that increases your dissection risk, it’s important to receive ongoing monitoring from a vascular specialist.
All people at risk for cervical artery dissection should optimize their health by:
Cervical artery dissections typically heal very well, returning the vessel to normal. This process usually occurs within the first three to six months.
You’ll need regular monitoring, including imaging studies, until healthcare providers confirm the dissection has healed. You may also need to continue antiplatelet medications or anticoagulant therapy during this time.
A note from Cleveland Clinic
Cervical artery dissection is a common cause of stroke in people between the ages of 40 and 60. But having a dissection doesn’t always mean you’ll experience a stroke. Many people undergo regular monitoring and have no complications. In those who have dissection symptoms, the goal of treatment is to prevent stroke. Healthcare providers usually prescribe medications that decrease the risk of blood clots.
Last reviewed by a Cleveland Clinic medical professional on 10/12/2022.
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