Peritonitis is an inflammation or infection of the peritoneum. The peritoneum is a thin tissue lining that covers the inside of the abdominal cavity. It also covers the outside of the intestines and other abdominal organs.
There are several types:
Peritonitis is a serious condition. It requires immediate treatment. If not promptly treated, it can be fatal.
Primary peritonitis—Occurs when there is a buildup of fluid in the abdomen. This is called
ascites. It is caused by health conditions, such as
cirrhosis of the liver.
Secondary peritonitis—Caused by bacteria that enter the abdominal cavity. Can be due to an injury or a condition, such as a ruptured appendix.
Dialysis-related peritonitis—Caused by bacteria that enter the peritoneal cavity during or after
(a treatment for kidney disease).
Spontaneous bacterial peritonitis (SBP). Merck Manual Professional Version website. Available at: http://www.merckmanuals.com/professional/hepatic-and-biliary-disorders/approach-to-the-patient-with-liver-disease/spontaneous-bacterial-peritonitis-sbp. Updated May 2016. Accessed October 3, 2017.
Last reviewed September 2018 by
EBSCO Medical Review Board
Daus Mahnke, MD
Last Updated: 9/30/2013
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