Vestibular Disorders are related to problems with balance. Dizziness, vertigo, lightheadedness, motion sickness, etc. and can be caused by visual, inner ear, general sensory and brain dysfunctions. Balance is a state of body equilibrium or stability.
For more information, please see http://www.medicinenet.com/vestibular_balance_disorders/article.htm
Vestibular Disorders – – Vestibular Disorders Association – http://www.vestibular.org/