The carotid arteries are the main arteries in your neck that supply blood to your brain. If too much plaque builds up in your carotid artery, it can cause the artery to narrow (carotid stenosis). Small clots can form, then break off and travel to the brain, causing a minor or major stroke.
The first signs of carotid artery disease may be:
Most people with carotid artery disease, even with severe blockage, experience no symptoms. The condition is usually found in a routine physical or during testing for other problems.
Very rarely, carotid artery disease may cause ringing in the ears or fainting due to decreased blood flow to the brain. Neck pain is not a symptom of carotid artery disease.
If you develop carotid artery disease, you will need regular carotid artery ultrasound tests.
The most common test is a non-invasive carotid artery duplex scan (ultrasound). This can determine whether the artery has narrowing and how bad it is. Some patients also need additional testing such as computerized tomography (CT) scan, magnetic resonance angiography (MRA) or angiogram.
Treatment for carotid artery disease is given to reduce the possibility of stroke. Specifics depend on the degree of artery narrowing.