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What is stroke?

What is stroke?

A stroke happens when blood stops flowing to any part of your brain, damaging brain cells. The effects of a stroke depend on the part of the brain that was damaged and the amount of damage done.

How the brain works

The brain is the control centre of your body. It controls how you think, feel, communicate and move. Knowing how your brain works can help you understand your stroke.

 

Types of stroke

The effects of your stroke depend on the type of stroke, the part of the brain that was damaged and the amount of damage.

Ischemic stroke

Caused by a blockage or clot in a blood vessel in your brain. The blockage can be caused when a substance called plaque builds up on the inside wall of an artery.

Hemorrhagic stroke

Caused when an artery in the brain breaks open. The interrupted blood flow causes damage to your brain. High blood pressure weakens arteries over time and is a major cause of hemorrhagic stroke. 

Transient ischemic attack (TIA)

Caused by a small clot that briefly blocks an artery. It is sometimes called a mini-stroke or warning stroke. No lasting damage occurs, but TIAs are an important warning that a more serious stroke may occur soon