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Colitis

Definition

Colitis is swelling (inflammation) of the large intestine (colon).

Causes

Most of the time, the cause of colitis is not known.

Causes of colitis include:

  • Infections caused by a virus or a parasite
  • due to bacteria
  • Lack of blood flow to the colon (ischemic colitis)
  • Past radiation to the colon (radiation colitis and strictures)
  • in newborns
  • caused by Clostridium difficile infection (now called Clostridiodes difficile)

    • Symptoms

    Symptoms can include:

  • and  that may be constant or come and go
  •  
  • Constant urge to have a bowel movement (tenesmus)
  • Fever

    • Exams and Tests

    The health care provider will perform a physical exam. You will also be asked questions about your symptoms, such as:

  • How long have you had the symptoms?
  • How severe is your pain?
  • How often do you have pain and how long does it last?
  • How often do you have diarrhea?
  • Have you traveled recently?
  • Have you taken antibiotics recently?

    • Your provider may recommend a flexible or . During this test, a flexible tube is inserted through your rectum to examine your colon. You may have biopsies taken during this exam. Biopsies may show changes related to inflammation. This can help determine the cause of colitis.

    Other studies that can identify colitis include:

    • Treatment

    Your treatment will depend on the cause of the disease.

    Outlook (Prognosis)

    The outlook depends on the cause of the problem.

  • Crohn disease is a chronic condition which has no cure but can be controlled. Biologic agents are very effective in controlling symptoms of Crohn colitis.
  • Ulcerative colitis can usually be controlled with medicines. If not controlled, it can be cured by surgically removing the colon.
  • Viral, bacterial, and parasitic colitis can be cured with appropriate medicines.
  • Pseudomembranous colitis can usually be cured with appropriate antibiotics.

    • Possible Complications

    Complications may include:

  • Bleeding with bowel movements
  • Perforation of the colon
  • Sore (ulceration)

    • When to Contact a Medical Professional

    Contact your provider if you have symptoms such as:

  • Abdominal pain that does not get better
  • Blood in the stool or stools that look black
  • Diarrhea or vomiting that does not go away
  • Swollen abdomen

    • References

    Ananthakrishnan AN, Regueiro MD. Management of inflammatory bowel diseases. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 11th ed. Philadelphia, PA: Elsevier; 2021:chap 116.

    Lichtenstein GR. Inflammatory bowel disease. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 127.

    Pardi DS, Cotter TG. Other diseases of the colon. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 11th ed. Philadelphia, PA: Elsevier; 2021:chap 128.

    Schedule An Appointment

    Contact Atlanta Obsetrics and Gynaecology at The Womens Center Millennium Hospital - 404-ATL-BABY

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    Review Date: 8/7/2023

    Reviewed By: Michael M. Phillips, MD, Emeritus Professor of Medicine, The George Washington University School of Medicine, Washington, DC. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.