This page summarises publicly available NHS information for educational purposes only. It is not medical advice or a diagnosis. Always consult a qualified healthcare professional.
What is dvt?
Deep vein thrombosis (DVT) is a blood clot in a deep vein, usually in the leg. It causes pain, swelling, warmth, and redness — usually in one leg, often in the calf. DVT is a medical emergency because the clot can travel to the lungs (pulmonary embolism). If you suspect DVT, get urgent medical help — call 111 or go to an urgent care centre.
When NHS resources suggest seeing a GP
- You think you have DVT (deep vein thrombosis).
Self-care information from NHS
- Stay a healthy weight.
- Stay active – taking regular walks can help.
- Drink plenty of fluids to avoid dehydration – DVT is more likely if you're dehydrated.
- Do not sit still for long periods of time – get up and move around every hour or so.
- Do not cross your legs while you're sitting.
- Do not smoke.
- Do not drink lots of alcohol.
Common questions
How do I know if I have a DVT?
Classic signs are swelling, pain, warmth, and redness in one leg — often the calf. The leg may look larger than the other or feel hard. Any one-sided leg swelling that comes on suddenly should be checked urgently.
What causes DVT?
Risk factors include long periods of immobility (long flights, bed rest after surgery), pregnancy, cancer, certain medications (including hormonal contraceptives and HRT), smoking, and a family history of clotting disorders.
How is DVT treated?
DVT is treated with blood-thinning medicines (anticoagulants) like rivaroxaban or warfarin, usually for at least 3 months. Compression stockings may also be recommended. Treatment prevents the clot growing and stops new clots forming.
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This page is for informational and educational purposes only. It does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional about your individual situation. NorMed organises publicly available NHS information and is not affiliated with the NHS.