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Diverticulosis is a condition that develops when pouches (diverticula) form in the wall of the colon (large intestine). These pouches are usually very small (5 to 10 millimeters) in diameter but can be larger.
In diverticulosis, the pouches in the colon wall do not cause symptoms. Diverticulosis may not be discovered unless symptoms occur, such as in painful diverticular disease or in diverticulitis. As many as 80 out of 100 people who have diverticulosis never get diverticulitis.1 In many cases, diverticulosis is discovered only when tests are done to find the cause of a different medical problem or during a screening exam.
The reason pouches (diverticula) form in the colon wall is not completely understood. Doctors think diverticula form when high pressure inside the colon pushes against weak spots in the colon wall.
Normally, a diet with adequate fiber (also called roughage) produces stool that is bulky and can move easily through the colon. If a diet is low in fiber, the colon must exert more pressure than usual to move small, hard stool. A low-fiber diet also can increase the time stool remains in the bowel, adding to the high pressure.
Pouches may form when the high pressure pushes against weak spots in the colon where blood vessels pass through the muscle layer of the bowel wall to supply blood to the inner wall.
Most people don't have symptoms. You may have had diverticulosis for years by the time symptoms occur (if they do). Over time, some people get an infection in the pouches (diverticulitis). For more information, see the topic Diverticulitis.
Your doctor may use the term painful diverticular disease. It's likely that painful diverticular disease is caused by irritable bowel syndrome (IBS). Symptoms include diarrhea and cramping abdominal (belly) pain, with no fever or other sign of an infection. For information on the symptoms of IBS, see the topic Irritable Bowel Syndrome (IBS).
The best way to treat diverticulosis is to avoid constipation. Here are some ideas:
This treatment may help reduce the formation of new pouches (diverticula) and lower the risk for diverticulitis.
Treatment for painful diverticular disease involves adding fiber to the diet and not eating foods that cause gas, pain, or other symptoms. Treatment is the same as that for irritable bowel syndrome (IBS), because many people who have this condition also have IBS. For information on the treatment of IBS, see the topic Irritable Bowel Syndrome (IBS).
Eating a high-fiber diet, getting plenty of fluid, and exercising regularly may help prevent diverticulosis.
|American College of Gastroenterology|
|6400 Goldsboro Road|
|Bethesda, MD 20817|
The American College of Gastroenterology is an organization of digestive disease specialists. The website contains information about common gastrointestinal problems.
|American Society of Colon and Rectal Surgeons|
|85 West Algonquin Road|
|Arlington Heights, IL 60005|
The American Society of Colon and Rectal Surgeons is the leading professional society representing more than 1,000 board-certified colon and rectal surgeons and other surgeons dedicated to treating people with diseases and disorders affecting the colon, rectum, and anus.
|National Digestive Diseases Information Clearinghouse|
|2 Information Way|
|Bethesda, MD 20892-3570|
This clearinghouse is a service of the U.S. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), part of the U.S. National Institutes of Health. The clearinghouse answers questions; develops, reviews, and sends out publications; and coordinates information resources about digestive diseases. Publications produced by the clearinghouse are reviewed carefully for scientific accuracy, content, and readability.
- Davis BR, Matthews JB (2006). Diverticular disease of the colon. In M Wolfe et al., eds., Therapy of Digestive Disorders, 2nd ed., pp. 855–859. Philadelphia: Saunders Elsevier.
Other Works Consulted
- Travis AC, Blumberg RS (2012). Diverticular disease of the colon. In NJ Greenberger et al., eds., Current Diagnosis and Treatment: Gastroenterology, Hepatology, and Endoscopy, 2nd ed., pp. 259–272. New York: McGraw-Hill.
|Primary Medical Reviewer||Adam Husney, MD - Family Medicine|
|Specialist Medical Reviewer||Jerome B. Simon, MD, FRCPC, FACP - Gastroenterology|
|Last Revised||July 19, 2012|
Last Revised: July 19, 2012
Author: Healthwise Staff
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