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What is a bulge on the brain?
A brain aneurysm (AN-yoo-riz-um) is a bulge or ballooning in a blood vessel in the brain. It often looks like a berry hanging on a stem. A brain aneurysm can leak or rupture, causing bleeding into the brain (hemorrhagic stroke).
What causes a brain aneurysms?
Aneurysms have a variety of causes including high blood pressure and atherosclerosis, trauma, heredity, and abnormal blood flow at the junction where arteries come together. There are other rare causes of aneurysms. Mycotic aneurysms are caused by infections of the artery wall.
Are aneurysms fatal?
If the aneurysm leaks or ruptures (bursts open), it causes bleeding in your brain. Sometimes it causes a hemorrhagic stroke, bleeding in or around the brain that can lead to brain damage and be fatal.
How serious is an unruptured aneurysm?
It can become so thin that the blood pressure within can cause it to leak or burst open — a life-threatening hemorrhage in the brain. The vast majority of aneurysms are silent, meaning they have no symptoms until they rupture.
Can a brain aneurysm be detected before it happens?
Although brain aneurysms usually don’t show symptoms, they can press on the brain and nerves as they get bigger. See a doctor at once if you’re having the following symptoms of an unruptured aneurysm: Headache. Dilated pupils.
Can a bulge in the brain cause a stroke?
When the thickening and hardening is uneven, arterial walls can develop bulges (called aneurysms). If a bulge ruptures, bleeding in the brain can cause a hemorrhagic stroke. Both types of stroke can be fatal.
What causes a bulging artery in the brain?
If bacteria spreads in the blood, an infection may develop in the artery wall. This weakens the wall of the artery, causing a bulging aneurysm to form. More than 1 of these often occur at the same time. They are at higher risk of bleeding and serious complications than other types. This type is less common.
What are the grooves on the surface of the brain called?
The surface of the brain appears wrinkled. The cerebral cortex has sulci (small grooves), fissures (larger grooves) and bulges between the grooves called gyri. Scientists have specific names for the bulges and grooves on the surface of the brain.
How does a cerebral aneurysm look like in the brain?
A cerebral aneurysm is a bulge in a weak area of the wall of a brain artery. It puffs out like a small balloon. It is also called an intracranial aneurysm or brain aneurysm. The bulge is also known as a bleb. It makes the artery more likely to tear (rupture) in that spot.