How is your mother? A stroke results to loss of brain functions due to a disturbance in the blood vessels supplying blood to the brain. It can affect patients physically, mentally, emotionally, or a combination of the three. This varies depending on the size and location of the lesion. Sometimes, if the cerebral cortex is involved,it can also can produce visual defect, memory deficits and even disorganized thinking, confusion, hypersexual gestures. You can read more about this through this link: http://en.wikipedia.org/wiki/Stroke#Subtypes
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