Pronounced: brain an-your-ih-symEn Español (Spanish Version)
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.
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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:
Last reviewedJune 2013by Rimas Lukas, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.