The appendix is a small tube-shaped organ connected to the large intestine believed by some scientists to be a vestigial or functionless organ. However, recent discoveries have led scientists to the conclusion that the appendix might be a container for good bacteria.
Appendicitis is a condition wherein the appendicitis swells and suffers from inflammation. As the inflammation gets worse, the appendix gets filled with bacteria and pus, and starts to swell even more.
When the appendix swells, it starts to push against the peritoneum, or the lining of the abdominal wall. This causes severe and sharp pain that can be felt in the abdomen.
If the appendix gets too big, then it could also rupture. When that happens, all of the trapped bacteria and pus spreads throughout the peritoneum, causing bacterial infection that can even spread to other organs. This can cause severe infection in the belly and can even be fatal.