The typical symptoms of acute appendicitis include abdominal pain that starts around the upper abdomen or navel area, then localizes to the lower right abdomen. There are also manifestations of gastrointestinal spasms such as nausea and vomiting. Due to inflammation entering the bloodstream, there can be a systemic infection, often accompanied by fever, generally not exceeding 38 degrees Celsius. If there is an appendix perforation and peritonitis, the temperature can exceed 38 degrees. After the appendix becomes suppurative, symptoms can include abdominal muscle rigidity, dental pain, and rebound tenderness.