[Differential diagnosis of functional voice disorders]

In phoniatrics the differential diagnosis of functional voice disorders is mainly based on the medical history of the patient, laryngoscopic and stroboscopic findings. On the one hand the typical laryngoscopic picture must be stressed, on the other hand the central significance of stroboscopy for the functional diagnosis of the larynx has to be mentioned. Only the detailed assessment of the stroboscopic signs and symptoms described by Schönhärl allows a therapy-relevant differentiation between cause-related diagnosis and compensatory secondary symptoms with a necessary distinction of psychosomatic disorders.