what causes purple toes
Blue Toe Syndrome. Blue toe syndrome, also known as Trash Foot or Purple Toe Syndrome, is caused by a blockage of the small blood vessels in the foot that reduces the flow of blood and oxygen to the tissues.It usually develops due to a problem higher up the blood stream such as an aneurysm or atherosclerosis.n blue toe syndrome, the plaque tends to break off from blood vessels near the groin and abdomen (known as the abdominal aorta-iliac-femoral arterial system). It travels through the blood stream and gets lodged in the small blood vessels of the foot.