Hemorrhoids

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Hemorrhoids

Hemorrhoid surgery - series

Hemorrhoids are painful, swollen veins in the lower portion of the rectum or anus.

Rectal lump; Piles; Lump in the rectum

This condition is very common, especially during pregnancy and after childbirth. Hemorrhoids result from increased pressure in the veins of the anus. The pressure causes the veins to bulge and expand, making them painful, particularly when you are sitting.

The most common cause is straining during bowel movements. Hemorrhoids may result from constipation, sitting for long periods of time, and anal infections. In some cases they may be caused by other diseases, such as liver cirrhosis.

Internal hemorrhoids occur just inside the anus, at the beginning of the rectum. External hemorrhoids occur at the anal opening and may hang outside the anus.

Review Date: 06/10/2005
Reviewed By: Joseph P. Hart, MD, Division of Vascular Surgery, Department of Surgery, Medical College of Wisconsin, Milwaukee, WI. Review provided by VeriMed Healthcare Network.