Bilateral or Unilateral Loss of Caloric Response

Abstract

Eleven patients with bilateral loss and 14 with unilateral loss of caloric response were examined clinically. The patients with bilateral loss had more frequent vertigo attacks than did those with unilateral loss. Ten patients (91%) with bilateral loss and five patients (36%) with unilateral loss had bilateral sensorineural hearing loss. Five patients (45%) with bilateral loss showed "vestibular recruitment", and the caloric response of these patients fluctuated. Only one patient (7%) with unilateral loss showed "vestibular recruitment".