A transient ischemic attack (TIA), sometimes called a mini-stroke, is an episode of stroke-like symptoms that usually last less than one hour. During a TIA, circulation to a part of the brain is interrupted briefly, then restored. This interruption can be caused by a narrowing of a brain artery because of atherosclerosis or a small floating blood clot that entered the bloodstream from somewhere else in the body, often the heart, and temporarily blocked a brain artery.
Sympto...
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