(HealthDay News) -- Deep vein thrombosis is a dangerous condition that occurs when a blood clot forms in a vein deep within the legs. The clot ultimately can break away and travel to the lungs.
Only about half of people with DVT have symptoms, the U.S. National Heart, Lung, and Blood Institute says. If warning signs do occur, they may include:
If you have any of these symptoms, seek medical attention at once.
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