[Rational diagnosis and therapy of irritable colon]

The irritable bowel syndrome is a common motility disorder of the gut characterized by constipation, diarrhea and abdominal pain. Symptoms are markedly influenced by psychological factors. The diagnosis is based on typical symptoms and exclusion of organic diseases. Psychological support by the physician is an important part of the patients' treatment. High fiber diets and bulking agents may be prescribed in addition. Antispasmodic and antidiarrheal drugs should be given only the shortest time possible, while psychotropic drugs are seldom necessary.