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Venous insufficiency

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Venous insufficiency

Veins in leg, with detail of healthy vein and valve and of damaged vein that allows blood to leak backward.

In venous insufficiency, the valves in the veins have become damaged. These valves normally keep blood flowing toward the heart. But damaged valves allow some blood to leak backward. This causes the veins to become overfilled. Fluid seeps out of the engorged veins into surrounding tissues. This may result in tissue breakdown and venous skin ulcers.

Current as of: May 1, 2026

Author: WebMD Ignite Staff
Clinical Review Board
All WebMD Ignite education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

Current as of: May 1, 2026

Author: WebMD Ignite Staff

Clinical Review Board
All WebMD Ignite education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

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This information does not replace the advice of a doctor. WebMD Ignite, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.

NOTICE: This health information was not created by Columbia University Irving Medical Center and may not necessarily reflect specific CUIMC practices. For medical advice to your personal condition, please consult your doctor. Medical advice disclaimer.