Everyone is at risk for brain aneurysms, although the percentage of aneurysms that rupture and cause death is small (about 10 in every 100,000 persons per year, or about 27,000 patients per year in the U.S.).
Cerebral aneurysms are more common in adults than in children and slightly more common in women than in men. People with certain inherited disorders are also at higher risk.
All cerebral aneurysms have the potential to rupture and cause bleeding within the brain.
The incidence of reported ruptured aneurysm is, most commonly in people between ages 30 and 60 years.
Possible risk factors for rupture include:
- hypertension (especially a sudden increase in blood pressure)
- alcohol abuse
- drug abuse (particularly cocaine), and
- smoking.
In addition, the condition and size of the aneurysm affects the risk of rupture.
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