What Is It?
In a thrombotic stroke, a blood clot (thrombus) forms inside one of the brain's arteries. The clot blocks blood flow to a part of the brain. This causes brain cells in that area to stop functioning and die quickly.
The blood clot that triggers a thrombotic stroke usually forms inside an artery that already has been narrowed by atherosclerosis. This is a condition in which fatty deposits (plaques) build up inside blood vessels.
Thrombotic strokes can affect large or small arteries in the brain. Strokes that affect large arteries block flow to greater portions of the brain. These strokes tend to cause the most disability