Venous thrombosis is a serious and often silent medical condition that can be life-threatening if not detected early. It occurs when a blood clot (thrombus) forms inside a vein, partially or completely blocking blood flow.
Although it can occur in different parts of the body, it most often affects the deep veins of the legs, which is why it is also known as deep vein thrombosis (DVT).
 What Happens During a Venous Thrombosis?
When a clot forms in a vein, blood stops flowing freely, which can trigger serious complications. In severe cases, the clot can break off and travel to the lungs, causing a pulmonary embolism, a life-threatening medical emergency.
