Deep vein thrombosis (DVT) is a blood clot that forms in a deep vein, often in your leg. Symptoms include swelling, pain, redness and warmth in your leg. Deep vein thrombosis (DVT) occurs when a blood clot (thrombus) forms in one or more of the deep veins in the body, usually in the legs. Deep vein thrombosis can cause leg pain or swelling. Deep vein thrombosis (DVT) is a type of venous thrombosis involving the formation of a blood clot in a deep vein, most commonly in the legs or pelvis. [9][a][11] Symptoms can include pain, swelling, redness, and enlarged veins in the affected area, but some DVTs have no symptoms. [1] Deep vein thrombosis (DVT) occurs when a blood clot forms in one of the deep veins of the body. Two of the most common risk factors for developing a DVT are an injury to your lower body and surgery that involves your hips or legs. DVT (deep vein thrombosis) DVT (deep vein thrombosis) is a blood clot in a vein, usually in the leg. DVT can be dangerous. Get medical help as soon as possible if you think you have DVT. A deep vein thrombosis (DVT) is a blood clot that forms in a vein deep inside your body. WebMD explains what causes it, as well as the symptoms and how you can prevent it. Deep vein thrombosis (DVT), is a blood clot that forms in a vein deep in the body, often in the leg. Learn about the causes, symptoms, and treatments. Deep vein thrombosis (DVT), which is a blood clot that develops in a deep vein, can cause pain, warmth, swelling, or redness (often in your calf muscle) that doesn’t go away. A DVT can be hard to. Deep Vein Thrombosis (DVT) is the most common type of venous thromboembolism (VTE). It occurs when a blood clot forms in a deep vein, usually in the lower leg, thigh, or pelvis. Learn about DVT symptoms, how to prevent it if you are at risk, and what treatment you may need. Calculates risk of DVT based on clinical criteria. There are several versions of these criteria with minor variations across studies; this version, based on Wells 2003, is among the most widely validated. Please fill out required fields.