What is a key characteristic of venous ulcers compared to arterial ulcers?

Venous ulcers are primarily a result of chronic venous insufficiency, leading to poor venous return and increased venous pressure. One of the key characteristics that distinguishes venous ulcers from arterial ulcers is the relief of pain upon elevating the legs. Patients with venous ulcers often experience relief from pain and a reduction in swelling when the affected limb is elevated, as this position helps improve venous return and decrease pressure in the veins.

In contrast, arterial ulcers are usually associated with reduced blood flow due to arterial occlusion, and they tend to be painful regardless of limb position. Understanding this distinction is crucial for differential diagnosis and appropriate treatment strategies when assessing patients with lower extremity ulcers.