Acute appendicitis primarily causes abdominal pain, initially in the upper middle abdomen or around the navel, gradually localizing to the lower right abdomen; if the inflammation is severe, the nature of the pain can be very intense, like a knife cut; the inflammation may also affect the peritoneum, causing tenderness, rebound pain, and muscle tension in the abdomen; in addition to abdominal pain, acute appendicitis may also lead to nausea and vomiting. For a confirmed diagnosis of acute appendicitis, surgery is generally required, with laparoscopic appendectomy as the main treatment nowadays. This surgical method involves less bleeding during the operation and a quicker recovery postoperatively.