The typical history of appendicitis starts with periumbilical pain, intermittent periumbilical pain, and gradually shifts to persistent right lower abdominal pain, which can be accompanied by a series of clinical symptoms such as fever and diarrhea; 2. Ultrasound examination indicates local swelling, congestion, omental wrapping, abdominal fluid and other inflammatory manifestations of the appendix. The combination of these may confirm the diagnosis of appendicitis.