What causes vestibular neuronitis?
Vestibular neuronitis often follows a cold or upper respiratory illness, suggesting that it may be caused by a virus. It may also be caused by conditions affecting the circulatory system (blood flow) and the brain and central nervous system.
The infection inflames the nerve, causing it to send signals to the brain that indicate motion. Since the other senses of the body (such as vision) do not detect the same movement, the confusion in signals causes vertigo.