Diverticula are pockets that develop in the colon wall, usually in the sigmoid or left
colon, but may involve the entire colon. Diverticulosis describes the presence of these pockets. Diverticulitis describes inflammation or complications of these pockets.
Diverticulitis – an infection of the diverticula – may cause one or more of the following symptoms: pain in the abdomen, chills, fever and change in bowel habits. More intense symptoms are associated with serious complications such as perforation (rupture), abscess or fistula formation (an abnormal connection between the colon and another organ or the skin).