What are the major types of peritonitis?
Infectious peritonitis is the most common type, and it is usually bacterial and less commonly mycobacterial or fungal in nature. Chemical (sterile) peritonitis is caused by irritant materials such as hemorrhage, bile, enteric fluid contents, contrast material, or other substances without peritoneal infection. Intraperitoneal rupture of a mature teratoma, familial Mediterranean fever (recurrent polyserositis), rheumatoid arthritis, and systemic lupus erythematosus are other sterile causes of peritonitis.