Peritonitis is the inflammation of the peritoneum, which is the thin tissue that
lines the inner wall of the abdomen. Peritonitis is often caused by infections
from organ’s perforation, but it may also result from non-infectious irritants,
such as gastric acid.
Peritonitis is usually classified as:
• Primary peritonitis, in which fluid builds up in the abdomen.
• Secondary peritonitis, which is caused by an infection that has spread from
the digestive tract such as ruptured appendix, a perforated colon or
pancreatitis, among other causes.