Brain Aneurysm

(Cerebral Aneurysm; Intracranial Aneurysm; Intracerebral Aneurysm; Aneurysm, Brain; Aneurysm, Cerebral; Aneurysm, Intracranial; Aneurysm, Intracerebral)

Definition

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. 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.
Brain Aneurysm
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Causes

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:
  • Congenital (present at birth) weakness in artery wall
  • High blood pressure
  • Infection
  • Trauma or injury to the brain
  • Tumor
  • Plaque build-up on artery walls

Risk Factors

These factors increase your chance of developing a brain aneurysm. These risk factors also increase your chance of a rupture. Older 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:

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