Hemorrhoids are a part of the body situated in the anal area, which is responsible for retaining liquids, gases and solids, but work in an important way also during the evacuation. For various reasons, the hemorrhoid term is used to indicate the problem that affects the same area, when in fact it would be correct to speak of -hemorrhoidal disease-.

It is a swelling, or a dilation of the veins that compose them, as these areas are particularly vascularized, ie crossed by bloodstream. For different causes, hemorrhoids can present these irritations, and then become very painful. The pain of hemorrhoids is manifested in the anal rectal area with very intense burning and itching, that can become uncontrollable. The pain of hemorrhoids is directly proportional to their size.