Hemorrhoids, which are painful swollen veins, can be found inside the anus or under the skin around it, and a common cause of this symptom is constipation. Blood vessels tend to swell, causing the hemorrhoid, when they are weak or have excess pressure, likely when one is constipated. The vessel can then burst and bleed, along with other symptoms experienced with hemorrhoids, such as itching and rectal pain.

When one is constipated, that person is likely to strain when trying to pass a bowel movement, and this can cause a small amount of lining from the intestines to be pushed out from the anus. This rectal prolapse can lead to the secretion of mucus from the anus. To treat this condition, all that is needed to do is stop the straining, unless the prolapse is severe. In that case, surgery might be needed.

In addition to straining during a bowel movement, hemorrhoids can be caused by constipation in women due to water retention during the premenstrual syndrome or menstruation.

Possible ways to stay hemorrhoid-free are to keep stools soft and easily-passable, as to also avoid constipation so there is less pressure and straining. Another important action is to empty bowels soon after the desire occurs.

Constipation can be avoided by exercise and fiber intake, and cutting back on alcohol and caffeine. Treatment or remedies for hemorrhoids include warm baths, ice packs and special creams. Anal fissures, or an unnatural crack or tear in the skin of the anus, can be taken care of by stretching the sphincter muscle or removal of the tissue or skin in that area.