In medical terms, **DVD** stands for **Deep Venous Disease**. It refers to a condition affecting the deep veins, primarily in the legs, where blood flow is impaired due to damage or obstruction. This can be caused by conditions such as **deep vein thrombosis (DVT)**, where blood clots form in deep veins, or by chronic venous insufficiency resulting from valve failure. DVD can lead to pain, swelling, skin changes, and in severe cases, venous ulcers. Diagnosis typically involves imaging studies like Doppler ultrasound, and treatment may include anticoagulants, compression therapy, or surgical intervention depending on the severity.