If left untreated, the bacteria will multiply and cause inflammation and kill healthy tissue.SymptomsIf you have recently had surgery or trauma to an abdominal organ and have other risk factors, such as diabetes or inflammatory bowel disease, be on the lookout for signs of an intra-abdominal abscess.Common symptoms include:FeverAbdominal painLack of appetiteNausea and vomitingChange in bowel movemen