The carotid arteries are the two large blood vessels that extend down your neck and provide necessary blood to the head and brain. Carotid artery disease begins when a buildup of plaque narrows the artery, causing a decrease of blood flow to the brain. The plaque initially has a wax-like consistency and can harden over time, making it hard for blood to run through the vessel. This hardened plaque can break off and cause clots, or travel to smaller arteries. The plaques can also buildup until there is a complete blockage in the artery. In either case, a stroke or
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