Vertigo.
Vertigo reflects dysfunction in the vestibular system. Any disease state which changes the firing frequency of a vestibular end-organ and which produces unequal neural input to the brainstem causes vertigo. Caloric stimulation mimics acute end-organ dysfunction and helps establish the diagnosis.
D002150:Caloric Tests; D005133:Eye Movements; D006801:Humans; D009759:Nystagmus, Pathologic / Q000150:complications / Q000175:diagnosis; D011187:Posture; D014717:Vertigo / Q000209:etiology / Q000628:therapy; D014722:Vestibule, Labyrinth / Q000033:anatomy & histology / Q000502:physiology