Most abdominal symptoms in children can be treated by the general practitioner. The most common one is "dolor abdominis NUD" that has no known aetiology but apparently is a disease in its own. It is important to identify diseases requiring surgical treatment. Acute appendicitis is by far the most common cause of abdominal pain requiring urgent treatment. The cause of abdominal pain may also be located outside the abdominal region, e.g. in respiratory infections. Of non-surgical diseases, urgent treatment is indicated in severe bacterial infections (pyelonephritis, meningitis).