Remember the symptoms of appendicitis

Based on the patient's symptoms, the diagnosis is acute appendicitis. The symptoms of acute appendicitis include the following: (1) Abdominal pain: The typical onset of abdominal pain begins in the upper abdomen, gradually shifts to the periumbilical region, and after several hours (6–8 hours), migrates and localizes to the right lower quadrant. The duration of this process depends on the extent of disease progression and the position of the appendix. Approximately 70%–80% of patients exhibit this classic pattern of migratory pain. In some cases, however, pain starts directly in the right lower abdomen. The nature of abdominal pain varies with different types of appendicitis: simple appendicitis presents as mild, dull pain; suppurative appendicitis causes paroxysmal distension and severe pain; gangrenous appendicitis results in persistent, intense abdominal pain; and in perforated appendicitis, the sudden decrease in intraluminal pressure of the appendix may temporarily relieve pain, but once peritonitis develops, the abdominal pain worsens progressively. (2) Gastrointestinal symptoms: Nausea and vomiting are common early in the course of the disease. Pelvic-positioned appendicitis can irritate the rectum and bladder, leading to symptoms such as diarrhea and dysuria. Diffuse peritonitis may result in intestinal obstruction.