What causes small-vessel (lacunar) stroke?

Small-vessel (lacunar) stroke is caused by obstruction of a single blood vessel that branches off the circle of arteries in the brain known as the circle of Willis. The obstruction may result from injury to vessel walls from high blood pressure and diabetes or from a clot growing in or traveling to a small vessel. This kind of stroke is often preceded by a transient ischemic attack (TIA) -- a brain attack that resolves within 24 hours (or ministroke). Lacunar strokes account for about 25% of all ischemic strokes.

Continue Learning about Causes Of Ischemic Stroke

How does atherosclerosis cause an ischemic stroke?
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Atherosclerosis (buildup of fats on artery walls) can eventually restrict blood flow to a portion of...
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What causes an embolic stroke?
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An embolic stroke is caused when a blood clot from the heart, aorta, or other source travels toward ...
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What increases my risk for an ischemic stroke?
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What is a cerebral embolism?
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