In the diagnosis of acute appendicitis, the patient will have abdominal pain: first of all, it is more typical to have metastatic right lower abdominal pain. Initially, the pain may be in the upper abdomen or around the navel, and then it gradually shifts and becomes fixed in the right lower abdomen, and gradually increases in intensity. Next, the patient’s blood tests show an increase in the number of white blood cells. Patients with acute appendicitis have a high white blood cell count at the beginning of the disease, and as the disease progresses, the white blood cell count may fall precipitously. Finally, an ultrasound of the abdomen or a CT examination of the abdomen is needed to see obvious swelling of the appendix, at which point the diagnosis of acute appendicitis is made.