[Defecation problems: incontinence, constipation and impeded defecation; why and what can be done?].

Defaecation disorders may be subsumed in three categories: Inability to control motions = incontinence. Difficulty of evacuation = constipation [inertia coli, outlet obstruction]. Impeded defaecation: Rectocele, enterocele, intussusception. Etiology, examination and therapy are described in detail. Characteristic complaints of patients are listed and matched with probable diagnoses. Beside routine proctologic examination endosonography, estimation of transit time, endoscopy and defecography are discussed. The role of nutrition is stressed and emphasis layed on fibre and fluid intake. The advice, "take more fluid and fibres" does not help a lot, because no individual help is given. A time consuming nutrition and defaecation history has to be taken to establish nutritional support. This attention gives confidence to the patient and helps a great deal in the treatment. A checklist of the therapy of constipation and summarizing tables on different types of fibres are included. Additional conservative treatments are pelvic exercises and biofeedback training. Operative therapy is directed towards etiology of the disorder. Therefore many different methods exist and their diagnose related indication are discussed.