What are Hemorrhoids? Hemorrhoids, also known as piles, are swollen veins in the lower part of the anus and rectum, similar to varicose veins. When the walls of these vessels are stretched, they become irritated. Hemorrhoids have a number of causes, although often the cause is unknown. They ma...

What is Venous Insufficiency? Venous insufficiency is a problem with the flow of blood from the veins of the legs back to the heart. It's also called chronic venous insufficiency or chronic venous stasis. Veins have valves that keep the blood moving in one direction-toward the heart. In ...