Hi. Thanks for your query and an elucidate history. Hi Peritoneal dialysis is being done for such a long time, there is a possibility of peritonitis. As per your history the other causes can be : Intestinal infection as you are more prone to. Increased urea and creatinine also can cause changes in the intestinal movements, predispose to infection. I would suggest you the following: First of all get the stool tested for routine, microscopy and culture and sensitivity. Secondly get started on appropriate antibiotics as per your kidney function reports under the guidance of a Nephrologist. Get other blood tests to see for CBC, Kidney, liver function test. X-ray of the abdomen in standing position. The proper diagnosis can lead to a proper treatment and you will be fine.