Can you tell me what is the difference between peripheral arterial disease and peripheral venous disease?

PAD: Arterial affects the arteries and can cause pain on walking, and if severe gangrene. Venous is usually clots in veins or varicose veins.

Yes: Peripheral means in the extremities (arms/legs). Arteries are thick walled, high pressure, elastic conduits that send oxygen rich pulsatile blood from the heart to the periphery .Veins are thin walled, low pressure, non-pulsatile, relatively larger structures that return oxygen poor blood to the heart and lungs. Both diseases can cause pain. The hallmark of PVD is swelling; of pad, pain with use.