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Stroke affects almost 6 million Americans every year, and it is the second leading cause of death. A stroke happens when blood flow to the brain is interrupted, either by a blood clot in the brain or from another part of the body (ischemic stroke), or by a blood vessel in the brain breaking open from high blood pressure (hemorrhagic stroke).
In most cases, stroke causes significant disability and requires intense rehabilitation to regain lost function from the damaged brain. Symptoms vary depending on which part of the brain is being...