A stroke: what is it and how do you recognize it ?
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What is a stroke?
A
stroke is sometimes called a "
brain attack." A stroke can injure the brain like a heart attack can injure the heart. A stroke occurs when part of the brain doesn't get the blood it needs. There are two types of stroke:
- Ischemic stroke (most common type) -- This type of stroke happens when blood is blocked from getting to the brain. This often happens because the artery is clogged with fatty deposits (atherosclerosis) or a blood clot.
- Hemorrhagic stroke -- This type of stroke happens when a blood vessel in the brain bursts, and blood bleeds into the brain. This type of stroke can be caused by an aneurysm -- a thin or weak spot in an artery that balloons out and can burst.
Both types of stroke can cause brain cells to die. This may cause a person to lose control of their speech, movement, and memory. If you think you are having a stroke, call 911.
What is a “mini-stroke”?
A “
mini-stroke”, also called a
transient ischemic attack or (TIA), happens when, for a short time, less blood than normal gets to the brain. You may have some signs of stroke or you may not notice any signs. A “mini-stroke” lasts from a few minutes up to a day. Many people do not even know they
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