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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.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.