Adhesions are common in people who have had abdominal or pelvic surgery. However, inflammation or infection in the body can also cause adhesion formation. Scar tissue (adhesions) can cause intestinal blockage, which can lead to death if not properly treated. Abdominal pain, nausea and vomiting are some of the symptoms that result as adhesions block intestines from their normal function. Severe, (beyond average stomach pain) accompanied by fever is a sure sign the patient should be taken to the hospital immediately.