The vascular system is the bodys network of blood vessels, arteries, veins and capillaries, that pump blood throughout the body. Vascular disorders involve diseases of the blood vessels and affect the circulatory system. This ranges from diseases of your arteries, veins and lymph vessels to blood disorders. The most common vascular disorder is stroke or brain attack. Most common Vascular Disorders include: Brain aneurysms, Vascular malformations like arteriovenous malformations, dural arteriovenous fistulas, cavernous malformations, Artery diseases, venous disease, Stroke and Moyamoya disease.