Aneurysm causes, signs, prevention and treatment :Aneurysm means ballooning and weakened area in an artery.Aneurysms often occur in the aorta, brain, back of the knee, intestine or spleen. A ruptured aneurysm can result in internal bleeding and stroke. It can sometimes be fatal.An aneurysm is a bulge in a blood vessel caused by a weakness in the blood vessel wall, usually where it branches. As blood passes throu ingh the weakened blood vessel, the blood pressure causes a small area to bulge outwards like a balloon.The causes of aneurysm:The main cause of an aneurysm:The most common culprits are atherosclerosis and