What are the main signs and symptoms of a VTE?

Typical DVT symptoms include pain and tenderness in the calf, swelling in the calf, and colour and temperature changes to the calf. Blood that would normally go through the blocked vein is diverted to outer veins. The calf may become warm and red, with swollen outer veins that are hot or swollen to touch. These symptoms usually occur in one leg only. Sometimes there are no signs or symptoms of a DBT and it is only diagnosed if a complication occurs such as a pulmonary embolism or PE. Signs and symptoms of a PE include breathlessness, chest pain which is pleuritic meaning a sharp pain that's felt in your chest when you breathe in. Often you could feel like you can't breathe deeply as this causes you to catch your breath. Coughing up blood, a mildly raised temperature, a fast heart rate, feeling faint, unwell or a collapse. This was a large blood clot interferes with the heart and blood circulation causing your blood pressure to drop dramatically. Rarely in extreme cases a PE can cause a cardiac arrest where the heart stops pumping due to the clot.