Pronounced: brain an-your-ih-sym An aneurysm is an outpouching
of a blood vessel wall. This can occur anywhere there are blood
vessels, including in the brain. The bulging, blood-filled
pocket can put pressure on parts of the brain, potentially
causing symptoms. In addition, the blood vessel can rupture
(hemorrhage). Early detection and diagnosis may help prevent
severe or fatal complications in some patients. Many aneurysms
go unnoticed for a lifetime and cause no symptoms. Copyright ©
Nucleus Medical Media, Inc. Aneurysms form in areas where the
artery wall becomes thin or weak. Thinning artery walls and
resulting aneurysms can be caused by a number of factors. Common
causes include: These factors increase your chance of developing
a brain aneurysm. These risk factors also increase your chance
of a rupture. Adults are more likely to develop an aneurysm than
children. Females are at slightly higher risk. Tell your doctor
if you have any of these risk factors: If you have any of these
symptoms, do not assume