Vestibular disorders: Disorders of the body's balance (vestibular) system in the inner ear due to a tremendous range of conditions including vertigo, Meniere's disease, acoustic neuroma, multiple sclerosis, syphilis, trauma, ear infections, medications toxic to the ear (ototoxic drugs), epilepsy (seizure disorders), etc.

Diagnosis is by neurological tests, including Electronystagmography (ENG), in which the patient's response to movement requests and questions about spacial positioning are observed. It can sometimes be confirmed by imaging or directly viewing inner ear structures or brain function. Treatment depends on the cause of the disorder, but may include medication, surgery, physical therapy, occupational therapy (particularly sensory integration therapy), or lifestyle adjustments.