Many people who have diverticulosis do not have any symptoms. If they do have symptoms, abdominal pain is the most common one. The pain is usually in the lower left abdomen. You may feel the pain most of the time, or it may come and go. You may also have more bowel gas or constipation.
Diverticulosis can also cause painless bleeding from the rectum.
Bleeding is less common than other symptoms. When inflammation or infection occurs in or around the pouches, it is called diverticulitis. If you have fever as well as abdominal pain, you may have developed diverticulitis. You should see your health care provider if this happens. Diverticula are best seen with a special intestinal x-ray called a barium enema.