Some cases of appendicitis can be detected by blood tests, because with appendicitis, there can be elevated white blood cells, elevated neutrophils, and also elevated C-reactive protein. In some cases of simple appendicitis or acute attacks of chronic appendicitis, these tests are normal, so they need to be combined with the patient’s physical examination and imaging tests to determine whether there is pressure pain in the right lower abdomen, whether there is thickening of the appendix during abdominal ultrasound or abdominal CT, whether there is a foreign body or food residue in the appendix, and in some cases, only during surgical exploration. After appendicitis, patients need to go to the general surgery or gastroenterology department of the hospital as soon as possible. Antibiotics and sometimes surgery to remove the appendix may be required.