Chrome 2001
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Aetna Intelihealth InteliHealth Aetna Intelihealth Aetna Intelihealth
 
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Harvard Medical School
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Chrome 2001
Chrome 2001

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overview
Stroke Overview
A stroke is a brain injury that occurs because the brain's blood supply is interrupted.

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hemorrhagic
Hemorrhagic Stroke
A hemorrhagic stroke is bleeding (hemorrhage) that suddenly interferes with the brain's function by cutting off part of its blood supply.

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lacunar
Lacunar Stroke
A lacunar stroke is a blockage of blood flow to a part of the brain supplied by one of the brain's smaller penetrating arteries.

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subarachnoid hemorrhage
Subarachnoid Hemorrhage
A subarachnoid hemorrhage is bleeding from a damaged artery at the surface of the brain. This bleeding often causes a sudden, severe headache. It is a medical emergency.

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thrombotic
Thrombotic Stroke
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.

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transient ischemic attack
Transient Ischemic Attack (TIA)
A transient ischemic attack (TIA) is an episode of stroke-like symptoms. It usually lasts less than one hour.


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