Different cause. Arterial ulcers are caused by lack of blood supply to the area, seen in diabetics with small vessel disease, venous ulcers are due to pooling and stagnation of blood as seen as in with long standing varicose veins. Varicose veins.
Ulcers. Yes and the treatment would be different based on the underlying abnormality. Most common location for venous ulcers are in the inner aspect of the ankle.
Venous ulcers. Venous ulcers occur in the face of longstanding venous disease either reflux or obstruction. This leads to skin discoloration and thickening where an ulcer may occur. Aretrial ulcers relate to impaired blood flow to the foot such that healing is impaired. It is possible to venous ulcers in the face of impaired arterial flow.
Limb loss risk. Arterial leg ulcers carry risk for limb loss and venous ulcer do not. An ultrasound of the arteries in the leg is helpful, easy test to determine the status of the artery supply. Get checked soon as treatment is effective in lowering risk for amputation/limb loss. Good luck.
Throbosis=clot. A thrombosis is a blood clot. The veins are redundant meaning that there are a lot of them draining a certain area. So a venous thrombosis is usually not really important except for discomfort as long as it is in the surface veins. One in the deep veins is a medical emergency. The arteries are less redundant and a clot in an artery can damage the area it supplies and can be very serious.
Ulcers. History physical exam would help to determine the underlying cause.
Arteries vs. Veins. Venous ulcers are usually due to venous hypertension (unusually high pressures in the veins for a long period of time). They occur most commonly on the inside of the ankles. Arterial ulcers occur due to poor circulation or blockage in the arteries. These most commonly occur in the toes or the heels. Among other things, diabetes affects the circulation in the toes and feet.
The short answer. Many ulcers have combined venous and arterial features. Venous ulcers are due to high pressures in the veins either from previous DVT or insufficiency. They often affect the ankle region. Compression is the mainstay of treatment and often surgery as well. Arterial ulcers are typically due to "blocked" vessels often affect the foot/toes and may require surgery to restore the flow.
DIfferences. Venous ulcers are usually occur over the inside or outside of the ankle, have irregular, less distinct orders, might not be very painful, and are associated with varicose veins that are causing other skin changes besides the ulcer. Arterial ulcers are often associated with other conditions like diabetes, smoking, and hypertension. These ulcers have more clear cut borders and usually hurt.
Ulcer artery vs vein. Venous ulcers are due to high blood pressure of the veins resulting in the leakage of fluid into the tissues of the legs. Compression of the lower extremities and surgery on the veins can correct this. Ischemic ulcers are due to problems with arteries. There are larger arteries and small microscopic ones and either or both can have blockages. They usually can be discerned from each other.