Are aneurysms hereditary?

Are aneurysms hereditary?

Among first-degree relatives, if one person has a cerebral aneurysm it would be appropriate to have the rest of the family, children or siblings, checked out after a discussion with your primary care physician. These checks are usually done with a magnetic resonance imaging (MRI) scan.

Studies suggest the link may vary between 10% and 20%. But all have shown that doctors find that relatives of aneurysm patients occasionally have an aneurysm too. That risk becomes even more likely if you or your family members have other risk factors for cerebral aneurysms.