[Significance of associated causes in the evaluation of post-traumatic vestibular damage].

Any evaluation of vestibular diseases following head and neck injuries must take into consideration the existence of other diseases which may act with the trauma causing lesions which might not have taken place otherwise or which would have had less import. In the present work the authors examine what medico-legal doctrine considers in regard to pre-existing, simultaneous and cropped up aggravations of lesions or of invalidity. Finally, an explanation is given of personal experience with 1500 patients with head and neck injury. It is pointed out how in 130 cases the presence of pathological conditions associated with the traumatic event was the cause of problems in evaluation of primary importance.