What causes dilated carotid arteries?

Sometimes... A dilated or aneursymal carotid on ultrasound is simply what we call a "redundant" carotid, meaning it is long and wraps on itself, so it looks bigger on ultrasound. True enlarged carotid arteries should be evaluated by a vascular surgeon.

Related Questions

What is the cause of dilated carotid artery and dizziness?

Unknown. Causes for carotid ectasia or aneurysms are not known. There are so many causes of dizziness. You need work-up. It is difficult to enumerate in this limited space. Read more...