What are the sequelae of aneurysm?

What are the sequelae of aneurysm? Are they bad?

1. Atherosclerosis is the most common cause of aneurysms. Due to lipid metabolism disorders, a large amount of lipids and cellulose are deposited, causing the intima and subintima tissues to thicken, forming atherosclerotic plaques. At the same time, the vasorum in the arterial wall is compressed by the fibrous rigid tissue, causing malnutrition of the arterial wall, destroying the middle layer of muscle fibers and elastic fibers, causing degeneration and rupture, making the arterial wall fragile and forming an aneurysm.

2. Intracranial aneurysm refers to a tumor protruding from the arterial wall caused by localized abnormal expansion of the lumen of a cerebral artery. Intracranial aneurysm is mainly a cyst caused by local congenital defects of the cerebral artery wall and increased cavity pressure, and is the first cause of subarachnoid hemorrhage.

There are two most obvious symptoms of intracranial aneurysms:

Focal symptoms: Oculomotor nerve palsy is common in the internal carotid artery - posterior communicating artery aneurysms and posterior cerebral artery aneurysms, which manifest as unilateral ptosis, pupil dilation, adduction, and disappearance of upper and lower vision, direct and indirect light reactions. Sometimes localized focal symptoms appear before subarachnoid hemorrhage and are regarded as precursor symptoms of aneurysm bleeding, such as mild migraine, orbital pain, followed by oculomotor nerve palsy. At this time, you should be alert to subsequent subarachnoid hemorrhage. Bleeding from middle cerebral artery aneurysms such as hematomas; or after bleeding from other aneurysms, cerebral vasospasm and cerebral infarction, patients may experience hemiplegia, movement or sensory disorders. Giant aneurysms affect the visual pathway, and patients may have visual impairment.

Symptoms of aneurysm rupture and bleeding: Once an aneurysm ruptures and bleeds, the clinical manifestations are severe subarachnoid hemorrhage, which occurs rapidly and the patient has severe headaches, as if the head is about to explode. Frequent vomiting, sweating, and fever; the neck is straight and the Krasner sign is positive. There may also be impaired consciousness or even coma. Some patients have causes such as fatigue and emotional excitement before bleeding, while some patients have no obvious causes or diseases during sleep.