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Definition & Facts

Diverticulosis is a condition that occurs when small pouches, or sacs, form and push outward through weak spots in the wall of your colon. When diverticulosis causes symptoms, bleeding, inflammation, or complications, doctors call this condition diverticular disease.

Doctor Using Digital Tablet Talking With Senior Patient

Symptoms & Causes

Symptoms of diverticular disease may include constipation, diarrhea, abdominal pain, or bloating. Diverticulitis most often causes abdominal pain, which is usually severe. Experts are not sure what causes these conditions.


To diagnose diverticular disease, doctors review your medical history, perform a physical exam, and order tests. Your doctor may notice pouches in your colon wall while performing tests for other reasons. If you don’t have symptoms related to these pouches, your doctor may diagnose diverticulosis.


Your doctor will recommend diverticular disease treatments based on whether you have chronic symptoms, diverticulitis, or complications. Treatments may include high-fiber foods, medicines, or surgery to remove part of your colon, called a colectomy.

Eating, Diet, & Nutrition

If you have chronic symptoms of diverticular disease or if you had diverticulitis in the past, your doctor may recommend eating more foods that are high in fiber. Good sources of fiber include whole grains, fruits, and vegetables.

Clinical Trials

The NIDDK conducts and supports clinical trials in many diseases and conditions, including digestive diseases. The trials look to find new ways to prevent, detect, or treat disease and improve quality of life.