Sudden abdominal pain and vomiting may be due to diet, gastritis, or early pregnancy, and the patient must be asked if she has a history of poor diet or has eaten food that is not easily digested. If acute gastritis is ruled out and sudden abdominal pain and vomiting is less than three days old, acute pancreatitis and acute cholecystitis should also be ruled out, and abdominal ultrasound and CT examination should be done to rule out any intestinal obstruction. For women of childbearing age, i.e. women who are not menopausal, special inquiry is made whether they are pregnant, and the easiest is to perform an early pregnancy test. In short, there are many causes of sudden abdominal pain and vomiting, which must be treated symptomatically.