The cerebrum is the largest part of the brain. It is made of a left and a right hemisphere. In most people, the right hemisphere is in charge of the functions on the left-side of the body and many cognitive functions.

A right-side stroke happens when the blood supply to the right side of the brain is interrupted. Without oxygen and nutrients from blood, the brain tissue quickly dies.

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There are two main types of stroke: ischemic and hemorrhagic. An ischemic stroke is the most common type of stroke.

An ischemic stroke is caused by a blockage of the blood flow, which may be due to:

  • A clot from another part of the body like the heart or neck; the clot breaks off and flows through the blood until it becomes trapped in a blood vessel supplying the brain
  • A clot that forms in an artery that supplies blood to the brain
  • A tear in an artery supplying blood to the brain—called an arterial dissection

A hemorrhagic stroke is caused by a burst blood vessel. Blood spills out of the broken blood vessel and pools in the brain. This interrupts the flow of blood and causes a build up of pressure on the brain.

Hemorrhagic vs. Ischemic Stroke
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