Diverticulitis is a digestive disorder caused by the formation of small, bulging pouches on the walls of the large intestine (colon). It is a common condition that affects individuals over the age of 40 and is more common in those who consume a low-fiber diet. Symptoms of diverticulitis include abdominal pain, tenderness, nausea, diarrhea, and constipation. Diagnosis of diverticulitis can be done through imaging tests such as a CT scan. Treatment of diverticulitis typically involves antibiotics, dietary changes, and rest. In severe cases, surgery may be necessary to remove the affected area of the colon.