If the patient is conscious of severe pain on the right side of the navel, the specific causes are as follows, firstly, digestive conditions are considered, for example, acute gastroenteritis, acute enteritis, ulcerative colitis, duodenal ulcer, gastric ulcer, all of which can cause severe pain in the abdomen on the right side of the navel. Next, general surgical disorders, such as acute gastric perforation, intestinal perforation, intestinal obstruction, and acute peritonitis, can also present with severe pain on the right side of the navel. Then, purulent appendicitis will also be clinically manifested by severe pain on the right side of the navel in the initial stage. Finally, for acute pancreatitis, cholecystitis, and even stones in the urinary system, there will also be involving pain on the right side of the navel. The right side of the femoral hernia, umbilical hernia, inguinal hernia, etc. will also have the above symptoms, and female patients who have ectopic pregnancy will also have this clinical manifestation.