Definition of Aneurysm, brain

Aneurysm, brain: An aneurysm of a blood vessel in the brain, usually due to a defect in the vessel at birth or from high blood pressure. Rupture of the aneurysm causes a sudden severe headache, often with nausea, vomiting, decreased consciousness, and can be life threatening.

Last Editorial Review: 3/19/2012

Dementia Pictures Slideshow: Disorders of the Brain

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