Diverticulosis - It means the presence of tiny bulges or pockets (also known as diverticula) in the intestines (colon). They are usually asymptomatic (no symptoms) and need no treatment. However, diverticulosis can lead to diverticulitis. Diverticulitis means inflammation (swelling) and infection of one or more diverticula. The patient may experience abdominal pain, nausea, fever, and other symptoms.  Picture Courtesy: medicalnews