Vestibular Neuronitis or Labyrinthitis
Vestibular neuronitis or labyrinthitis is an inflammation of the inner ear or its associated nerve (the vestibular portion of the vestibulocochlear nerve), which causes vertigo. Hearing may also be affected if the infection affects both portions of the vestibulocochlear nerve.
The vertigo caused by vestibular neuronitis or labyrinthitis is of a sudden onset and can be mild or extremely severe. Nausea, vomiting, unsteadiness, decreased concentration, nystagmus and impaired vision may also accompany the vertigo. Most often the infections that cause inflammation of the inner ear or the vestibulocochlear nerve are viral in nature as opposed to bacterial. Proper diagnosis of the cause is important in order to provide the most effective and appropriate treatment.