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What causes varicose veins?

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In varicose veins, the valves don't work properly. So blood pools in the vein and makes it difficult for the muscles to push the blood "uphill." Instead of flowing from one valve to the next, the blood continues to pool in the vein, increasing pressure and the likelihood of congestion while causing the vein to bulge and twist. Because superficial veins have less muscle support than deep veins, they are more likely to become varicose.

SOURCES:

National Heart Lung and Blood Institute: "Explore Varicose Veins."

Mayo Clinic: "Varicose veins."

Reviewed by Debra Jaliman on July 17, 2019

SOURCES:

National Heart Lung and Blood Institute: "Explore Varicose Veins."

Mayo Clinic: "Varicose veins."

Reviewed by Debra Jaliman on July 17, 2019

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What skin conditions are related to HIV/AIDS?

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