Dismiss Modal

Types

Understanding Chronic Venous Insufficiency

Choose a preferred language

Problems with the veins in the legs may lead to chronic venous insufficiency (CVI). CVI means that there's a long-term problem with the veins not being able to pump blood back to your heart. When this happens, blood stays in the legs. This causes leg swelling and aching.

Two problems that may lead to CVI 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 doesn't flow as well. 

  • Deep vein thrombosis).  Blood clots may form in the deep veins of the legs. This may cause leg pain, redness, and swelling. It may also block the flow of blood back to the heart. Get medical care right away if you have these symptoms.

Cross section of muscle and vein showing damaged valve. Arrow shows blood moving down.Cross section of muscle and vein with blood clot.


Call 911

A blood clot in the leg can also break off and travel to the lungs. This is called a pulmonary embolism (PE). In the lungs, the clot can cut off blood flow. This is a medical emergency and may cause death. Call 911 right away if you have these symptoms of a PE:

  • Chest pain

  • Trouble breathing

  • Fast heartbeat

  • Fainting


Knowing the symptoms

Be aware of the following:

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

  • Swollen ankles (very common)

  • As swelling increases, the skin over your ankles may:

    • Show red spots or a brownish tinge

    • Feel leathery or scaly

    • Start to itch

  • If swelling isn't controlled, an open sore may form.


What you can do

CVI can’t be cured. But controlling leg swelling can reduce the risk of sores. Follow these tips:

  • Increase blood flow back to your heart by:

    • Raising (elevating) your legs

    • Exercising daily

    • Wearing elastic (compression) stockings

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

  • Maintain good skin care.

  • If you must stand or sit in one place for a long time, keep your blood moving by:

    • Wiggling your toes

    • Shifting your body position

    • Rising up on the balls of your feet

    • Wearing compression stockings

© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

Find a cardiac specialist

Because every beat matters, our cardiac doctors are dedicated to providing care like no other can.

Browse heart doctors

Related Articles
Read article
Heart Health
Understanding Deep Vein Thrombosis

DVT is a blood clot in a deep vein. To protect your health, a blood clot must be treated right away. Read on to learn about details such as how DVT occurs, risk factors, symptoms, treatment, and prevention.

Read article
Heart Health
Superficial Thrombophlebitis

Superficial thrombophlebitis occurs when 1 or more of the superficial veins become inflamed. This is most often due to a blood clot. Read on to learn how to care for yourself as you heal.

Read article
Heart Health
Tachycardia: PAT (PSVT)

PAT stands for paroxysmal atrial tachycardia. It is a type of paroxysmal supraventricular tachycardia (PSVT). This means your heart suddenly starts beating very fast. This may feel like your heart is racing or pounding. Because it comes on so suddenly, it is often scary. But this is usually not a dangerous condition. PAT can last seconds, minutes, or hours.

Read article
Heart Health
Surgery for Abdominal Aortic Aneurysm

During surgery for abdominal aortic aneurysm, the weakened aortic wall is replaced with a hollow man-made tube (a graft).