Venous thromboembolism is a serious vascular disease that also starts in the vein, and DVT and pulmonary embolisms are forms of the condition. With long periods of non-movement, blood flow in the legs slows and pools, and blood clots may form. If those clots break off, they travel through the bloodstream to the lungs, where they can cause a pulmonary embolism (PE). Some symptoms of PE include chest pain, coughing, irregular heartbeat, and shortness of breath, but there are minimal, if any, symptoms for DVT.

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