脑卒中是指急性血管源性神经功能障碍,突然(数秒内)或迅速(数小时内)出现受累脑部区域相应的表现,如突然一侧胳膊、腿活动不灵活或麻木,说话不利索,头痛、呕吐及昏迷等。脑卒中通常分为缺血性卒中和出血性卒中。缺血性卒中是指局部脑血流循环障碍,一种是短暂性脑缺血发作(短暂的神经功能障碍,24小时内完全恢复正常);另一种是脑梗死(血栓或栓子阻塞脑动脉),包括脑血栓形成和脑栓塞。出血性脑卒中包括脑出血和蛛网膜下腔出血。 Stroke refers to acute vascular-derived neurological dysfunction that occurs suddenly (within seconds) or promptly (within a matter of hours) to appear in the affected area of ​​the brain, such as abrupt side arms, weak leg movements or numbness, unspeakable speech, Headache, vomiting and coma. Stroke is usually divided into ischemic stroke and hemorrhagic stroke. Ischemic stroke is a disorder of local cerebral blood flow circulation, one is a transient ischemic attack (transient neurological dysfunction, fully restored within 24 hours); the other is a cerebral infarction (thrombus or embolic obstruction of the brain Arteries), including cerebral thrombosis and cerebral embolism. Hemorrhagic stroke includes cerebral hemorrhage and subarachnoid hemorrhage.