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What is peripheral venous disease?

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Veins are flexible, hollow tubes with flaps inside called valves. When your muscles contract, the valves open and blood moves through the veins. When your muscles relax, the valves close, which keeps blood flowing in one direction through the veins.

If the valves inside your veins become damaged, the valves may not close completely. This allows blood to flow in both directions. When your muscles relax, the valves inside the damaged vein(s) will not be able to hold the blood. This can cause pooling of blood or swelling in the veins. The veins bulge and look like ropes under your skin. The blood begins to move more slowly through the veins. It may stick to the sides of the vessel walls and blood clots can form.

From: Vascular Diseases and Pain WebMD Medical Reference

SOURCES: 

American Heart Association. 

Cleveland Clinic.

Reviewed by Minesh Khatri on April 30, 2017

SOURCES: 

American Heart Association. 

Cleveland Clinic.

Reviewed by Minesh Khatri on April 30, 2017

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What is peripheral arterial disease (PVD)?

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