Significant pressure pain in the right lower abdomen, which does not hurt without pressure, is considered to be caused by appendicitis. Especially in the early stage of appendicitis or in patients with chronic appendicitis, localized pain can occur after overeating. On examination, there are pressure points at the site of the intersection of the umbilicus and the external and external 1/3 of the anterior superior iliac spine line, without clear rebound pain or muscle tension. Patients with mild cases may opt for conservative treatment, while recurrent episodes of pain and, in severe cases, septicemia may also require the option of surgical removal of the appendix. Since the appendix is a blind end, it is prone to pain secondary to an inflammatory response if obstruction of locally adherent fecal stones occurs. Patients with chronic appendicitis may experience pain in the right lower abdomen when they have irregular food or diarrhea and constipation, or when they are cold and tired.