Ulcerative colitis is a type of inflammatory bowel disease (IBD) that affects the large intestine (colon) and rectum.
See also: Crohn's disease
Inflammatory bowel disease - ulcerative colitis; IBD - ulcerative colitis
Causes, incidence, and risk factors:
The cause of ulcerative colitis is unknown. It may affect any age group, although there are peaks at ages 15 - 30 and then again at ages 50 - 70.
The disease usually begins in the rectal area and may eventually extend through the entire large intestine. Repeated swelling (inflammation) leads to thickening of the wall of the intestine and rectum with scar tissue. Death of colon tissue or sepsis (severe infection) may occur with severe disease.
The symptoms vary in severity and may start slowly or suddenly. Many factors can lead to attacks, including respiratory infections or physical stress.
Risk factors include a family history of ulcerative colitis, or Jewish ancestry.
Abdominal pain and cramping that usually disappears after a bowel movement
Abdominal sounds (a gurgling or splashing sound heard over the intestine)
- Diarrhea, from only a few episodes to very often throughout the day (blood and mucus may be present)
Tenesmus (rectal pain)
Other symptoms that may occur with ulcerative colitis include the following:
Signs and tests:
Colonoscopy with biopsy is generally used to diagnose ulcerative colitis.
Colonoscopy is also used to screen people with ulcerative colitis for colon cancer. Ulcerative colitis increases the risk of colon cancer. If you have this condition, you should be screened with colonoscopy about 8 - 12 years after being diagnosed. You should have a follow-up colonoscopy every 1 - 2 years.
Other tests that may be done to help diagnose this condition include:
The goals of treatment are to:
- Control the acute attacks
- Prevent repeated attacks
- Help the colon heal
Hospitalization is often required for severe attacks. Your doctor may prescribe corticosteroids to reduce inflammation. You may be given nutrients through an intravenous (IV) line (through a vein).
DIET AND NUTRITION
Certain types of foods may worsen diarrhea and gas symptoms, especially during times of active disease. Diet suggestions:
- Eat small amounts of food throughout the day.
- Drink lots of water (frequent consumption of small amounts throughout the day).
- Avoid high-fiber foods (bran, beans, nuts, seeds, and popcorn).
- Avoid fatty greasy or fried foods and sauces (butter, margarine, and heavy cream).
- Limit milk products if you are lactose intolerant. Dairy products are a good source of protein and calcium.
- Avoid or limit alcohol and caffeine.
Medications that may be used to decrease the number of attacks include:
- 5-aminosalicylates such as mesalamine or sulfazine
- Immunomodulators such as azathioprine and 6-mercaptopurine
- Corticosteroids (prednisone and methylprednisolone) taken by mouth during a flare-up or as a rectal suppository, foam, or enema
- Infliximab (Remicade) to treat patients who do not respond to other medications
Surgery to remove the colon will cure ulcerative colitis and removes the threat of colon cancer. Surgery is usually for patients who have:
- Colitis that does not respond to complete medical therapy
- Changes in the lining of their colon that are felt to be precancerous
- Serious complications such as rupture (perforation) of the colon, severe bleeding (hemorrhage), or toxic megacolon
Most of the time, the entire colon, including the rectum, is removed. Afterwards, patients may need an ileostomy (a surgical opening in the abdominal wall), or a procedure that connects the small intestine to the anus to help the patient gain more normal bowel function.
Social support can often help with the stress of dealing with illness, and support group members may also have useful tips for finding the best treatment and coping with the condition.
For more information, visit the Crohn's and Colitis Foundation of America (CCFA) web site at www.ccfa.org .
About half of patients with ulcerative colitis have mild symptoms. Patients with more severe ulcerative colitis tend to respond less well to medications.
Permanent and complete control of symptoms with medications is unusual. Cure is only possible through complete removal of the large intestine.
The risk of colon cancer increases in each decade after ulcerative colitis is diagnosed.
- Blood clots
- Colorectal cancer
- Colon narrowing
- Complications of corticosteroid therapy
- Impaired growth and sexual development in children
- Inflammation of the joints (arthritis)
- Lesions in the eye
- Massive bleeding in the colon
- Pyoderma gangrenosum (skin ulcer)
- Tears or holes (perforation) in the colon
Calling your health care provider:
Call your health care provider if you develop persistent abdominal pain, new or increased bleeding, persistent fever, or other symptoms of ulcerative colitis.
Call your health care provider if you have ulcerative colitis and your symptoms worsen or do not improve with treatment, or if new symptoms develop.
Because the cause is unknown, prevention is also unknown.
Nonsteroidal anti-inflammatory drugs (NSAIDs) may make symptoms worse.
Due to the risk of colon cancer associated with ulcerative colitis, screening with colonoscopy is recommended.
The American Cancer Society recommends having your first screening:
- 8 years after you are diagnosed with severe disease, or when most of, or the entire, large intestine is involved
- 12 - 15 years after diagnosis when only the left side of the large intestine is involved
Have follow-up examinations every 1 - 2 years.
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Rutgeerts P, Vermeire S, Van Assche G. Biological therapies for inflammatory bowel diseases. Gastroenterology. 2009;136(4):1182-1197.