What Is a Stroke?

A stroke is a reduction in blood supply to the brain due to a blockage or bleeding in the brain. Rapid treatment—within three hours of the first symptom—is crucial. Stroke symptoms come on suddenly and include trouble speaking; confusion; weakness, numbness, or paralysis on one side of the face or body; vision problems; severe headache; or trouble with walking or balance.

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What to Know About Ryan Seacrest's 'Stroke' Symptoms, According to Doctors

The TV host's slurred speech and eye changes during the American Idol finale alarmed fans, but his rep has clarified that Seacrest did not suffer this health emergency.
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Mom Suffering Stroke Saved By Time-Sensitive Medicine Thanks to Selfie Taken Minutes Before

Doctors gave Stephanie Farnan time-sensitive medicine after learning when the stroke occurred as indicated by the time of the selfie on her phone.
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More on Stroke

10 Stroke Symptoms Everyone Should Know

If you or someone you know has one or more of the following stroke symptoms, call 911. A stroke is a medical emergency, and doctors often say “time is brain,” meaning the quicker you get treatment, the better.
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I Had a Massive Stroke at Age 29 and Almost Died

Now I'm all about embracing my imperfect self.