Making lifestyle changes as well as regular visits to your physician can lower your risk of vascular conditions. However, when necessary, Dr. P. Phillips Hospital offers vascular surgery services to patients who suffer from certain vascular conditions. Vascular disease refers to the network of blood vessels that carry blood throughout the body. Peripheral vascular disease refers to insufficient arterial circulation in the arms and/or legs. In persons over the age of 30, the leading cause of peripheral vascular disease is atherosclerosis or hardening of the arteries.