Arterial ulcers are open sores that occur due to poor blood circulation, often resulting from conditions like peripheral artery disease. These ulcers typically develop on the feet, toes, or lower legs and are characterized by a pale appearance, well-defined edges, and a lack of surrounding tissue swelling. The primary cause of arterial ulcers is reduced blood flow, which impairs the healing process. Treatment often involves improving circulation through methods such as medications, surgery, or lifestyle changes. Proper wound care is essential to prevent infection and promote healing.