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Related Experiment Video

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Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction

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[Inferior vestibular neuritis].

Stephen Jacques Alzuphar¹, Raphaël Maire¹

¹Unité d'otoneurologie et audiologie, Service d'oto-rhino-laryngologie et de chirurgie cervico-faciale, CHUV, 1011 Lausanne.

Revue Medicale Suisse

|October 6, 2017

Summary

Inferior vestibular neuritis, a rare cause of acute vestibular loss, is diagnosed by specific nystagmus and abnormal cervical vestibular-evoked myogenic potentials. Imaging is crucial to rule out central nervous system causes.

Area of Science:

Neurology
Otolaryngology
Neuroscience

Background:

Inferior vestibular neuritis is a rare condition involving acute peripheral vestibular dysfunction.
It specifically affects the inferior vestibular nerve, leading to distinct clinical signs.

Purpose of the Study:

To outline the diagnostic criteria for inferior vestibular neuritis.
To differentiate it from central nervous system lesions causing similar symptoms.

Main Methods:

Clinical observation of spontaneous downbeating nystagmus.
Performance of head impulse tests focusing on the posterior semicircular canal.
Assessment of cervical vestibular-evoked myogenic potentials (cVEMP).

Main Results:

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Diagnosis relies on downbeating nystagmus, abnormal posterior canal head impulse test, and abnormal cVEMP.
Normal findings in bithermal caloric testing and horizontal/anterior canal head impulse tests.
Normal ocular vestibular-evoked myogenic potentials (oVEMP) are characteristic.

Conclusions:

Inferior vestibular neuritis presents with a unique pattern of vestibular dysfunction.
Cervical VEMP is a key diagnostic tool, distinguishing it from other vestibular pathologies.
Cerebral MRI is essential for excluding central causes of downbeating nystagmus.