Symptoms of thrombosis depend on the location of the blood clot. They may include:

• Pain, redness and swelling
• Chest pain and shortness of breath – clots associated with deep vein thrombosis can travel to the lungs, causing a pulmonary embolism
• Weakness on one side of the body, problems speaking and difficulties with balance and walking – if you have an arterial thrombus in the heart, head or neck, this can cause a heart attack or stroke.

There are many risk factors associated with thrombosis. Arterial thrombosis is often caused by fatty deposits clogging the arteries.

There is a higher chance of developing superficial or deep vein thrombosis if you:

• Have recently had surgery
• Are a smoker
• Have been immobile for extended periods of time
• Are pregnant
• Have cancer
• Have increased oestrogen levels (due to hormone therapy or oral contraceptive medication)
• Have a blood disorder
• Are dehydrated
• Have a history of thrombosis
• Have a family history of thrombosis

The most important thing you can do to reduce your risk of thrombosis is prioritise your health, by:

• Quitting smoking
• Reducing alcohol intake
• Maintaining a healthy weight
• Exercising regularly
• Ensuring a healthy and nutritious diet

Wearing compression stockings, especially on long flights and following surgery, and regular exercises can also prevent blood clots. If you are at risk of thrombosis, your doctor may recommend certain medications to thin your blood or reduce your cholesterol and blood pressure.