What is deep vein thrombosis?

Dr Sarah Jarvis MBE, GP and Clinical Director of Patient.info A deep vein thrombosis (DVT) is a blood clot in a vein. Blood clots in veins most often occur in the legs but can occur elsewhere in the body, including the arms. This leaflet is about blood clots in leg veins. The most common cause of a blood clot developing in a vein is immobility. A complication can occur in some cases where part of the blood clot breaks off and travels to the lung (pulmonary embolus). This is usually prevented if you are given anticoagulation treatment. Find out more here: [https://patient.info/health/deep-vein-thrombosis-leaflet](https://patient.info/health/deep-vein-thrombosis-leaflet)

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