The veins that are located in the anus and lower rectum, due to certain reasons, may swell up or suffer inflammation. These swollen veins are known as hemorrhoids, or better known as piles. The condition is one of the most common medical conditions. However, most people do not ...

A precise definition of hemorrhoids does not exist, but they can be described as masses or clumps ("cushions") of tissue within the anal canal that contain blood vessels and the surrounding, supporting tissue made up of muscle and elastic fibers. The anal canal is the last four centimeters ...