Deep Vein Thrombosis occurs when a clot develops in deep veins, typically in the leg. Swelling or pain may result, although there are no signs in some cases. Certain health conditions affect clotting and raise DVT risk. Prolonged periods of immobilisation, such as bed rest or travel, can also induce clotting. Clots may separate, travel through the veins, and block blood circulation. This condition, called pulmonary embolism (PE), is dangerous. When both DVT and PE occur, they are called venous thromboembolism.
