A brain aneurysm is a weak, bulging spot in a brain artery that can rupture, leading to potentially life-threatening bleeding within the brain. Often asymptomatic until rupture, an aneurysm may cause sudden severe headaches, nausea, and loss of consciousness. Factors such as high blood pressure, smoking, and family history can contribute to their development. Diagnostic imaging like CT scans or MRIs helps identify aneurysms. Treatment options include surgical clipping or endovascular coiling to prevent rupture. Early detection and intervention are crucial, as ruptured aneurysms demand swift medical attention for better outcomes and reduced complications.