Small valves inside the veins help blood to flow properly through them. Varicose veins develop when these valves do not work properly, allowing blood to collect in the veins. The veins then widen and ...

Mark Gurarie is a writer covering health topics, technology, music, books, and culture. He also teaches health science and research writing at George Washington University's School of Medical and ...

Those bulging, twisted blood vessels snaking down your legs aren’t just a cosmetic concern. For millions of Americans, varicose veins represent a silent health crisis that’s far more serious than most ...

Chronic venous insufficiency (CVI) is when the valves in the leg veins don’t work right and inappropriately allow blood to flow backward, back into the legs/feet from the effects of gravity. This is ...

The aim of endovenous mechanochemical ablation is to close the varicose vein. The procedure is done using local anaesthetic. Ultrasound imaging is used to identify the vein needing treatment. A tube ...