[Diagnosis and therapy of chronic constipation]

Chronic constipation is a frequent disorder, which results from a disturbed colonic passage and/or an impaired evacuation of the rectum. Secondary forms of constipation due to systemic disorders or medications are frequent. Therapy of constipation is complex and should be planned according to the type of constipation. Therapy includes general rules, dietary fibers and, when necessary, the controlled treatment with medications. Functional obstructions in the rectum may require a surgical therapy or specialized forms of treatment like biofeedback.