Do You Know

What Is a Deep Vein Thrombosis (DVT)?

  • A DVT is a blood clot that forms inside a vein. It may partially or completely block blood flow or, break off and travel to the lung. This is different from clots in superficial veins, where clots rarely break off.
  • A DVT usually involves the lower legs (calves) or lower abdomen, but occasionally affects other veins in the body.
  • It is most common in persons over age 60.

What Are the Signs & Symptoms of DVT?

  • Sometimes no symptoms
  • Swelling and pain in the area drained by the vein, usually the ankle, calf or thigh. Swelling in the leg includes everything below the clot, extending to the toes.
  • Tenderness and redness of the affected parts
  • Soreness or pain when walking. The soreness does not disappear with rest.
  • Pain when raising the leg and flexing the foot (sometimes)
  • Fever (sometimes)
  • Increased heartbeat (sometimes)


Last modified: May 19, 2021

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