Vestibular tests are tests of function.
Their purpose is to determine if there is something wrong with the vestibular portion of the inner ear. If dizziness is not caused by the inner ear, it might be caused by the brain, by medical disorders such as low blood pressure, or by psychological problems such as anxiety. To decide if more expensive tests like MRI imaging are needed. To document objectively vestibular conditions such as BPPV and Perilymph fistula , which commonly occur after head injury, and Gentamicin ototoxicity , which commonly is a side effect of medication. We will discuss the main subcategories of vestibular tests next.