Venous leg ulcers are open sores that occur on the lower legs, primarily due to poor blood circulation in the veins. This condition often arises from venous insufficiency, where veins struggle to return blood to the heart, leading to increased pressure and fluid buildup in the legs. These ulcers typically appear as irregularly shaped wounds, often accompanied by swelling, pain, and skin discoloration. Treatment focuses on improving blood flow, managing symptoms, and promoting healing through methods such as compression therapy and proper wound care.