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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This 23-Year-Old Suffered a Paralyzing Stroke After Cracking Her Neck

She was just watching a movie when she tore a major artery.