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Brain aneurysm


A brain aneurysm is usually diagnosed using an MRI scan and angiography (MRA), or a CT scan and angiography (CTA).

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Brain aneurysms are usually treated with surgery if they have burst or there's a risk they will burst.

It's not clear what causes brain aneurysms. You're more likely to get them if you smoke, have high blood pressure or have family members with them.

A brain aneurysm is a bulge in a blood vessel in your brain. It can be very serious if it bursts.

Symptoms of a brain aneurysm can include headaches or changes in your vision. If it bursts, it can cause a sudden and very severe headache.

Page last reviewed: 16/08/2018
Next review due: 16/08/2021