What is Central Vestibular Disorder?
Central vestibular disorder describes dizziness, vertigo or imbalance that is result of dysfunction within the central nervous system. The central nervous system plays a large role in successfully processing balance and spatial information.
Central Vestibular Disorder Symptomology:
Symptoms of central vestibular disorder typically have a gradual onset and progression in severity. Dizziness associated with central vestibular disorder may be described as a feeling of disequilibrium, lightheadedness or general imbalance rather than vertigo. Furthermore, symptoms are typically described as constant rather than episodic.
Central Vestibular Disorder Testing:
Indications of a central lesion may be revealed during videonystagmography (VNG) testing. VNG central indications may include: abnormalities of eye movements, direction-changing nystagmus within one head position, or nystagmus exacerbated by visual fixation. This information can then be sent to patient’s referring physician for further investigation.