What is a Stroke?

A Stroke: What Is It?

A stroke, also called a “brain attack,” happens when blood flow to a part of the brain stops. When blood flow is stopped the brain tissue does not get enough blood and oxygen to survive. Brain cells can die, causing permanent damage.

Hemorrhagic Stroke is caused by the rupture of a blood vessel either inside or around brain tissue. 

Ischemic Stroke is caused by a blood clot or clogged blood vessels due to atherosclerosis that cuts off blood flow to an area of the brain.

A transient ischemic attack (TIA or mini-stroke) is a "warning stroke" that occurs when a blood clot blocks an artery for a short time. The only difference between a stroke and TIA is that with TIA the blockage is temporary. TIA symptoms occur rapidly and last a relatively short time. Unlike a stroke, when a TIA is over, there's no permanent injury to the brain. There's no way to tell if symptoms of a stroke will lead to a TIA or a major stroke. It's important to call 9-1-1 immediately for any stroke symptoms.