A stroke caused by interrupted blood flow to the brain, either from a blocked blood vessel (ischemic) or bleeding (hemorrhagic). This results in brain tissue damage and loss of neurological function.
From Latin 'cerebrum' (brain) + 'vasculum' (small vessel) + 'accident' from Latin 'accidere' (to happen). The term evolved in the mid-20th century as medical understanding of stroke mechanisms improved. Originally called 'apoplexy' from Greek, meaning 'struck down by violence.'
The word 'accident' is misleading here - most strokes are actually predictable results of underlying conditions like hypertension or atrial fibrillation! Modern medicine prefers 'stroke' because it emphasizes the preventable nature of most cases.
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