First Aid Symptoms Understanding Signs and Symptoms of a Stroke Share Pin Email Updated April 06, 2016 A stroke is a reduction in blood flow to a part of the brain due to a clot forming in one of the blood vessels. Here's the symptoms to be on the watch for. Knowing these could save a life. Up Next Up Next Article Try These 3 Natural Methods to Lower the Risk of Stroke Up Next Article What's the Difference Between a Heart Attack and a Stroke? Up Next Video How to Recognize a Heart Attack in Women Up Next Article What Do TIAs or Mini-Strokes Mean to You?