Often described as "varicose veins of the anus and rectum,” hemorrhoids
are enlarged, bulging blood vessels in and around the anus and lower rectum. The rectum is
the bottom section of your colon (large intestine). The tissues supporting the vessels
stretch. As a result, the vessels expand, the walls thin and bleeding occurs. When the
stretching and pressure continue, the weakened vessels protrude. The two types of hemorrhoids,
external and internal, refer to their location.