Stroke is a condition where the blood supply to the brain is disrupted, resulting in oxygen starvation, brain damage and loss of function.
It is most frequently caused by a clot in an artery supplying blood to the brain, a situation known as ischemia. It can also be caused by hemorrhage when a burst vessel causes blood to leak into the brain.
Stroke can cause permanent damage, including partial paralysis and impairment in speech, comprehension and memory. The extent and location of the damage determines the severity of the stroke, which can range from minimal to catastrophic.
Learn about stroke and know how you can prevent stroke.