An aneurysm is a localized dilation of a blood vessel wall caused by structural weakness, most commonly occurring in cerebral arteries. A brain aneurysm may remain asymptomatic or rupture, leading to subarachnoid hemorrhage, a life-threatening neurological emergency requiring immediate intervention.<\/p>\n
Brain aneurysm symptoms without rupture often include localized headache, visual disturbances, cranial nerve deficits, and orbital pain due to pressure on adjacent neural structures. These manifestations vary depending on aneurysm size, location, and rate of expansion within intracranial circulation.<\/p>\n
Ruptured brain aneurysm symptoms typically present with sudden, severe headache described as the worst headache of life, accompanied by nausea, vomiting, neck stiffness, photophobia, and altered consciousness. Rapid neurological deterioration may occur due to increased intracranial pressure and bleeding.<\/p>\n
Risk factors for brain aneurysm formation and rupture include hypertension, smoking, genetic predisposition, connective tissue disorders, and advanced age. Early diagnosis through imaging modalities such as CT angiography<\/a> and timely neurosurgical or endovascular treatment significantly improves clinical outcomes.<\/p>\n
| What You Should Know<\/td>\n | Information<\/td>\n<\/tr>\n |
| What Is an Aneurysm?<\/td>\n | An enlargement of the vessel wall, usually in the form of a balloon. It is most commonly seen in arteries.<\/td>\n<\/tr>\n |
| What Is a Brain Aneurysm?<\/td>\n | An aneurysm that forms in the arteries of the brain. When it ruptures, bleeding into the brain (subarachnoid hemorrhage) occurs.<\/td>\n<\/tr>\n |
| Prevalence<\/td>\n | Seen in approximately 1\u20132% of the population. Not every aneurysm results in bleeding, but it carries risk.<\/td>\n<\/tr>\n |
| Most Common Locations<\/td>\n | Located in the vascular region at the base of the brain known as the Circle of Willis.<\/td>\n<\/tr>\n |
| Symptoms (Before Rupture)<\/td>\n | Headache, visual disturbances, drooping eyelid, speech difficulties, balance problems.<\/td>\n<\/tr>\n |
| Symptoms (When Ruptured)<\/td>\n | Sudden and very severe headache (\u201cthe worst headache of my life\u201d), nausea, vomiting, loss of consciousness, neck stiffness, neurological deficits.<\/td>\n<\/tr>\n |
| Risk Factors<\/td>\n | Hypertension, smoking, excessive alcohol consumption, family history of aneurysm, certain genetic diseases (such as polycystic kidney disease).<\/td>\n<\/tr>\n |
| Diagnostic Methods<\/td>\n | Brain CT, CT angiography, MR angiography, and cerebral angiography.<\/td>\n<\/tr>\n |
| Treatment Methods<\/td>\n | Surgical clipping or endovascular coiling (filling the aneurysm by entering through the vessel).<\/td>\n<\/tr>\n |
| Factors Affecting Treatment Decision<\/td>\n | The size and location of the aneurysm, the patient\u2019s age, general health status, and whether bleeding has occurred are evaluated.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n |