What is a brain aneurysm?

According to Mayo Clinic, a brain aneurysm is a bulging blood vessel that is found in the blood vessels of the brain. The blood vessel can stay stabilized or it can leak or rupture, causing major medical problems.

According to Mayo Clinic, a brain aneurysm can burst and cause bleeding in the brain. The bleeding can lead to a stroke and quickly become life-threatening if it isn't caught by a doctor early. However, most brain aneurysms stay stable and do not rupture. When brain aneurysms stay stable, they do not cause health problems and may not be symptomatic, states Mayo Clinic.