The first and most dangerous and urgent consequence of a ruptured aneurysm is the occurrence of hydrocephalus, because subarachnoid hemorrhage caused by a ruptured aneurysm can easily block the normal circulatory pathway of cerebrospinal fluid, and acute hydrocephalus can easily develop at this time. The second is the occurrence of cerebral vasospasm, which is the phenomenon of blood vessels immersed in blood and water that may become cramped and gradually become narrower, leading most easily to cerebral infarction. And sometimes even a large area of brain infarction, but also very easy to affect the safety of life. The third is the occurrence of some disabilities, such as numbness and weakness of the limbs, speech dysfunction, and so on. This is often related to the location of the ruptured aneurysm. The fourth is the manifestation of epilepsy. Many people develop epilepsy after aneurysm rupture, mainly because the ruptured aneurysm disrupts the normal intracranial firing process and generates abnormal discharges, thus forming this undesirable epileptic manifestation.