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Deep vein thrombosis

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Introduction
Deep vein thrombosis (DVT) is a blood clot in one of the deep veins in the body. Blood clots that develop in a vein are also known as venous thrombosis.
Symptoms of deep vein thrombosis (DVT)
In some cases of deep vein thrombosis (DVT) there may be no symptoms, but possible symptoms can include pain, swelling and tenderness in your legs.
Causes of deep vein thrombosis (DVT)
Deep vein thrombosis (DVT) sometimes occurs for no apparent reason. However, the risk of developing DVT is increased in certain circumstances.
Diagnosing deep vein thrombosis
If you think that you may have deep vein thrombosis (DVT), see your GP as soon as possible. Your GP will ask you about your medical history and your symptoms.
Treating deep vein thrombosis (DVT)
If you have deep vein thrombosis (DVT), you will need to take a medicine called an anticoagulant and wear compression stockings.
Complications of deep vein thrombosis
The two main complications of deep vein thrombosis (DVT) are pulmonary embolism and post-thrombotic syndrome.
Preventing deep vein thrombosis
If you are admitted to hospital or are planning to go into hospital for surgery, your healthcare team will assess your risk of developing a blood clot.
'I got DVT from flying'
Journalist Mark Pownall from north London developed deep vein thrombosis (DVT) on a long-haul flight from New Orleans to London.
'I woke up and couldn't feel my left leg'
Helen Cannings, 34, developed venous thromboembolism (VTE) at around 30 weeks of pregnancy. Her father also died of pulmonary embolism at the age of just 49.
'Stay positive and be as informed as you can be'
Battling through three different cancers meant that getting blood clots was the last thing on Jeremy Smith's mind.
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