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Brain Aneurysm

URL of this page: http://www.nlm.nih.gov/medlineplus/brainaneurysm.html

Also called: Also called: Berry aneurysm, Cerebral aneurysm, Intracranial aneurysm

A brain aneurysm is an abnormal bulge or "ballooning" in the wall of an artery in the brain. They are sometimes called berry aneurysms because they are often the size of a small berry. Most brain aneurysms produce no symptoms until they become large, begin to leak blood, or rupture.

If a brain aneurysm presses on nerves in your brain, it can cause signs and symptoms. These can include:

Treatment depends on the size and location of the aneurysm, whether it is infected, and whether it has ruptured. If a brain aneurysm ruptures, symptoms can include a sudden, severe headache, nausea and vomiting, stiff neck, loss of consciousness, and signs of a stroke. Any of these symptoms require immediate medical attention.

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The primary NIH organization for research on Brain Aneurysm is the National Institute of Neurological Disorders and Stroke - http://www.ninds.nih.gov/

Date last updated: March 04 2009
Topic last reviewed: March 02 2009