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Anal Fissure

Colorado Colon & Rectal Specialists

Lisa A. Perryman, MD, FACS, FASCRS

Colon and Rectal Surgeon & A Private Medical Practice located in Denver Metropolitan Area, Parker, CO

An anal fissure is a tear in the lining of the anal canal.  It can be very painful and may cause bleeding. Call the office or use the online appointment maker for help from Colorado Colon & Rectal Specialists in the Denver metropolitan area, Colorado.

Anal Fissure

What Is Anal Fissure?

An anal fissure is a small split or tear in the lining of the anal canal. Fissures may be caused by constipation, the passing of large, hard stools, or by prolonged diarrhea. Anal fissures may occur secondary to decreased blood flow or trauma to the area.

Anal fissures are also common in women after childbirth and persons having anal sex.



Anal fissures may cause painful bowel movements and bleeding. There may be blood on the outside of the stool or on the toilet tissue following a bowel movement.

Diagnosis and Treatment

To diagnose, your health care provider will perform a gentle inspection of the anus.

Home care treatments:

  • A diet high in fiber
  • Increased hydration
  • Numbing cream, if pain interferes with normal bowel movement
  • Warm sitz baths
  • Stool softeners

Physician treatments may involve:

  • Botox injections into muscle in the anus (anal sphincter)
  • Different prescription topical medications
  • Surgery if the fissure fails to heal 

To prevent fissures:

  • Take a fiber supplement daily
  • Keep the anal area dry
  • Wipe with soft materials or a moistened cloth or cotton pad