A stroke occurs when the blood flow to a particular area of the brain is blocked or cut off. Brain cells deprived of oxygen begin to deteriorate and die, and in most cases, bodily functions and limbs controlled by that part of the brain start to malfunction. Muscle control and memory may be lost. A mini-stroke or transient ischemic attack (TIA) occurs when a person experiences symptoms of a stroke that resolve in 24 hours or less. However, anyone experiencing the symptoms of a mini or full stroke should seek medical attention immediately.
Stroke causes facial palsy, a type of paralysis that usually affects one side of the face. The lower eyelid may also droop from the weight of the cheek. Lack of sensation can cause drooping of the corner of the mouth, as well, that may result in drooling.
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