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A stroke is a
sudden disruption in blood flow to the brain caused by a blockage or bleeding
of a blood vessel. Areas of the brain that are affected by the blockage or
bleeding can become damaged within minutes. The effects of a stroke may be mild
or severe and temporary or permanent. The effects depend on which brain cells
are damaged, how much of the brain is involved, and how quickly the blood
supply is restored to the area.
How this information was developed to help you make better health decisions.