Diverticulitis is a condition that occurs when small pouches, called diverticula, form in the walls of the colon and become inflamed or infected. These pouches can develop due to increased pressure in the intestines, often linked to a low-fiber diet. Symptoms may include abdominal pain, fever, and changes in bowel habits. Treatment for diverticulitis typically involves antibiotics to fight infection and a temporary change in diet to allow the intestines to heal. In severe cases, surgery may be necessary to remove the affected portion of the colon. Maintaining a high-fiber diet can help prevent future episodes.