An aneurysm is a bulge or ballooning in a blood vessel caused by weakness in the vessel wall. This can occur in various parts of the body, but it is most commonly found in the brain or aorta, the large artery that carries blood from the heart. If an aneurysm grows too large, it can rupture, leading to serious health complications or even death. Symptoms of an aneurysm can vary depending on its location. For instance, a brain aneurysm may cause headaches or vision problems, while an aortic aneurysm might lead to chest or back pain. Early detection and treatment are crucial to prevent life-threatening situations.