A cerebral aneurysm is a bulge or ballooning in a blood vessel in the brain. This occurs when the vessel wall weakens, which can lead to serious complications if it ruptures. Symptoms may include headaches, vision changes, or seizures, but many people may not experience any symptoms until the aneurysm is large or has burst. If a cerebral aneurysm ruptures, it can cause a subarachnoid hemorrhage, a type of stroke that can be life-threatening. Treatment options include monitoring small aneurysms or surgical procedures like clipping or coiling to prevent rupture. Early detection is crucial for effective management.