Stroke is defined as the sudden attack (poplexia /, blow, attack). Typically refers to fainting caused by a stroke or brain hemorrhage, and is therefore a stroke, the smallest vessels of the brain. According to the WHO, is the third leading cause of death after heart attack and cancer.
The causes must be sought in a clot, or a small clot that blocks the movement of a blood vessel in the brain. Moreover, there may be a weakness of the vessels, and then excess tension causes bleeding. When the blockage is small does not occur more than a temporary crisis. A little slight facial paralysis or loss of movement of the word. But then restores irrigation, and nothing happens. Other times, the area is greater and the effects are permanent. And finally might happen, the emergence of a cerebral hemorrhage, the outcome can be fatal.
Stroke is what happens when the blood supply to the brain is interrupted. This kills the cells in the brain and can result in permanent disability (both physical andmental) and may even lead to death.
