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Understanding Chronic Venous Insufficiency

Problems with the veins in the legs may lead to chronic venous insufficiency (CVI). CVI means that there is a long-term problem with the veins not working well. Because of it, blood stays in the legs and causes swelling. 

Two problems that may lead to chronic venous insufficiency are:

  • Damaged valves. Valves keep blood flowing from the legs through the blood vessels and back to the heart. When the valves are damaged, blood does not flow as well. 

  • Deep vein thrombosis (DVT). Blood clots may form in the deep veins of the legs. This may cause pain, redness, and swelling in the legs. It may also block the flow of blood back to the heart. Call your health care provider if you have these symptoms.

  • A blood clot in the leg can also break off and travel to the lungs. This is called pulmonary embolism (PE). In the lungs, the clot can cut off the flow of blood. This may cause chest pain, trouble breathing, sweating, a fast heartbeat, coughing (may cough up blood), and fainting. It is a medical emergency and may cause death. Call 911 if you have these symptoms.

  • Health care providers call the 2 conditions, DVT and PE, venous thromboembolism (VTE).

CVI can’t be cured, but you can control leg swelling to reduce the likelihood of ulcers (sores).

Feet up on footrest with caption: Elevate legs often. Don't stand or sit with legs down for more than an hour. Man exercising in swimming pool with caption: Exercise like walking in deep water supports your veins and improves blood flow. Man putting on socks with caption: Wear elastic stockings every day. If you like, wear other socks over them.

Recognizing the symptoms

  • If you stand or sit with your feet down for long periods, your legs may ache or feel heavy.

  • Swollen ankles are possibly the most common symptom of CVI.

  • As swelling increases, the skin over your ankles may show red spots or a brownish tinge. The skin may feel leathery or scaly, and may start to itch.

  • If swelling is not controlled, an ulcer (open wound) may form.

What you can do

Reduce your risk of developing ulcers by doing the following:

  • Increase blood flow back to your heart by elevating your legs, exercising daily, and wearing elastic stockings.

  • Boost blood flow in your legs by losing excess weight.

  • If you must stand or sit in 1 place for a period of time, keep your blood moving by wiggling your toes, shifting your body position, and rising up on the balls of your feet.


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