Only about half of the people with deep vein thrombosis have symptoms. The symptoms may include:

• Swelling of the leg
• Pain or tenderness in the leg, usually in one leg and may be felt only when standing or walking
• Increased warmth in the area of the leg that is swollen or in pain
• Changes in skin colour or redness

Symptoms of pulmonary embolism include chest pain when taking a deep breath, rapid pulse, fainting, shortness of breath and coughing up of blood. Blood clots that remain lodged in the leg can result in pain and swelling.

It is important to see a doctor right away if you have symptoms of deep vein thrombosis or pulmonary embolism. Deep vein thrombosis can cause very serious complications if not treated.