Diverticulitis is a common digestive disease which involves the formation of pouches within the bowel wall. This is also known as diverticulosis. The severity of disease depends on the extent of infection and complications. Diverticulitis is believed to develop due to changes inside the intestines including high pressures due to faulty contracting of the intestines. Most people with diverticulosis do not have any discomfort or symptoms. However, symptoms may include mild cramps, bloating, and constipation. They often evolve from age-related diverticulosis including bleeding, perforation, fistula formation.