A stroke is the disruption of blood flow to an area of the
brain.
As a result of the loss of blood supply, the area of the brain supplied
by that artery dies. The actual signs of the stroke are dependent upon
the actual blood vessel that is affected. Some common signs of stroke
include: weakness or numbness of one side of the body, inability to
speak or understand what others are saying, slurred speech, vision disturbance
(usually in one eye), headache (usually with hemorrhagic stroke, described
as the "worst headache of my life"), and dizziness or vertigo (a sensation
of spinning).
Stroke can occur in two different ways:
- An Ischemic Stroke occurs when an artery in
the brain becomes blocked by either a blood clot,
or an atherosclerotic plaque (a build up of cholesterol).
- A Hemorrhagic Stroke occurs when an artery
in the brain ruptures or bursts.
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