Factors that may increase your risk of developing an anal fissure include:

  • Infancy. Many infants experience an anal fissure during their first year of life; experts aren't sure why.
  • Aging. Older adults may develop an anal fissure partly due to slowed circulation, resulting in decreased blood flow to the rectal area.
  • Constipation. Straining during bowel movements and passing hard stools increase the risk of tearing.
  • Childbirth. Anal fissures are more common in women after they give birth.
  • Crohn's disease. This inflammatory bowel disease causes chronic inflammation of the intestinal tract, which may make the lining of the anal canal more vulnerable to tearing.
Dec. 04, 2012