The tension in arterial walls is directly proportional to their radius according to LaPlace's law. Larger arteries experience greater tension than capillaries. If an artery develops a weak spot and expands to form an aneurysm, the tension increases further, putting it at higher risk of rupture. Aneurysms are dangerous as they can rupture and cause hemorrhaging. While no clear drug treatments exist, anti-hypertensive medications and neurointervention procedures are used to monitor and prevent further expansion of aneurysms.