A temporary episode of neurological dysfunction caused by brief interruption of blood flow to the brain, lasting less than 24 hours with no permanent damage. Often called a 'mini-stroke' and serves as a warning sign for future strokes.
From Latin 'transire' (to go across, pass) + Greek 'ischemia' from 'ischein' (to hold back) + 'haima' (blood). The concept emerged in the 1950s as doctors recognized these brief episodes as distinct from full strokes. The term emphasizes both the temporary nature and the underlying vascular cause.
TIAs are like fire drills for your brain - they're temporary warnings that something bigger might be coming! About one-third of people who have a TIA will have a major stroke within a year if left untreated.
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