Causes of Appendicitis
Appendicitis occurs when the interior of the appendix becomes filled with something that causes it to swell, such as mucus, bacteria, foreign body, hard stool, or parasites. The appendix then becomes irritated and inflamed. Appendix may perforate allowing stool, mucus, and other substances to leak through and get inside the abdomen causing localized abscess or generalised infection of abdomen (peritonitis).