Abdominal pain standard differential also applies to patients with<unk>  dialysis, in addition to concern for peritonitis
Dialysis-associated hypotension
Dialysis disequilibrium syndrome
Air embolism
Missed dialysis (pulmonary edema)
Culture-positive infectious Peritonitis
Infectious peritonitis with sterile cultures
Chemical peritonitis
Eosinophilia of the effluent
Hemoperitoneum
Malignancy
Chylous effluent (rare)
Specimen taken from “dry” abdomen
Obesity
Intestinal obstruction
Pregnancy
Ascites
Cirrhosis
Malignancy
Heart failure
Tuberculosis
Spontaneous bacterial peritonitis<unk> 
Distended bladder / Acute urinary retention
Constipation / fecal impaction
Large tumor(s) (e.g. ovarian, lymphoma)
Organomegaly
Cirrhosis
Malignancy
Heart failure
Tuberculosis
Peritoneal dialysis-associated peritonitis
Abdominal pain standard differential also applies to patients with peritoneal dialysis, in addition to concern for peritonitis
Spontaneous bacterial peritonitis
Dialysis-associated hypotension
Abdominal compartment syndrome
Dialysis disequilibrium syndrome
Ureteral stent complications
Air embolism