Functional voiding problems can be divided into three different groups: neurogenic dysfunction, myogenic dysfunction and true functional impairment of micturition in the sense of a psychosomatic disorder. Patients should be classified in the latter group only, if somatic disorders are excluded by conscientious urologic examination. Treatment of these patients is very time-consuming and difficult. Pure myogenic dysfunction occurs with rare generalised muscle disease only. Neurogenic dysfunction represents the majority of cases. Investigations in the Swiss Centre for Paraplegics and some new publications point out fundamental tendencies in the therapy and rehabilitation of neurogenic bladder dysfunction.