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A
stroke occurs when the blood supply to an area of the brain is interrupted, disrupted
or a blood vessel bursts. Brain cells begin to die when they stop receiving
oxygen and nutrients from the blood or there is sudden bleeding into or around
the brain. The two forms of stroke are ischemic, a blockage of a
blood vessel supplying the brain, and hemorrhagic, bleeding into or around
the brain.
Stroke causes one or more symptoms, depending on the part of the brain affected and the amount of damage done.
Symptoms
of a stroke come on suddenly. If numbness, weakness or paralysis of the
face, arm, or leg especially on one side of the body, confusion, trouble talking
or understanding, seeing in either one or both eyes, severe headache, trouble
walking, or loss of balance occur all of the sudden, call a doctor immediately.
Any of these symptoms may last only a few moments and then disappear. The
sooner a stroke is treated, the better the chance of recovery.
The three treatment stages for stroke are prevention, therapy immediately after the stroke, and post-stroke rehabilitation. About 25 percent of people who recover from their first stroke will have another stroke within 5 years.
In children or young adults, the cause of
a stroke is often a hemorrhage and recovery may be different from strokes in older
patients.
Recovery from a stroke is very difficult to predict. Recovery time varies depending on the extent of the stroke and their previous health condition.