What's the difference between arterial and venous thrombosis?

Location: The main difference is location, one is on the venous side, the other on the arterial side. Causes of thrombosis are usually different on the venous side than on the arterial side but there are some disease states that can produce thrombosis on either side. A common cause on the arterial side is atherosclerosis, a common cause on the venous side is stasis producing a deep venous thrombosis(dvt).

180 degrees: Arterial thrombosis is stoppage of blood flow from the heart to different parts of the body. The result is tissue death: in arteries to the heart=heart attack; in arteries to the legs=gangrene. Venous thrombosis is within veins which return blood to the heart. It may be in deep veins which is a serious matter often requiring anticoagulation, and in superficial veins appearing red, painful.