DefinitionAn intra-abdominal abscess is an infected pocket of fluid and pus located inside the belly area (abdominal cavity). There may be more than one abscess.Alternative NamesAbscess - intra-abdominalCauses, incidence, and risk factorsAn intra-abdominal abscess can be caused by a ruptured appendix, ruptured diverticula, a parasite infection in the intestines (Entamoeba histolytica), or other condition.Risk factors include a history of appendicitis, diverticulitis, perforated ulcer disease, or any surgery that may have infected the abdominal cavity.SymptomsDepending on the location, symptoms may include:Abdominal pain and distentionChillsDiarrheaFeverLack of appetiteNauseaRectal tenderness and fullnessVomitingWeaknessSigns and testsA complete blood count may show a higher than normal whi