<unk>  is an inflammation (irritation) of the peritoneum, the tissue that lines the wall of the abdomen and covers the abdominal organs.
There are three specific types of<unk> :
Spontaneous<unk> : Spontaneous<unk>  is usually caused by ascites, a collection of fluid in the peritoneal cavity. This usually occurs from liver or kidney failure.
Secondary<unk> :Secondary<unk>  is an inflammation of the peritoneum, the tissue lining the abdominal cavity. Secondary means it is due to another condition, most commonly the spread of an infection from the digestive tract.
Dialysis associated<unk> : Dialysis-associated<unk>  is inflammation of the lining of the abdominal cavity (peritoneum), which occurs in those who receive peritoneal dialysis.
Peritonitis
Secondary peritonitis
Splenic abscess
Gallstone ileus
Spontaneous bacterial peritonitis
Hemoperitoneum
Appendicitis
Acute cholecystitis