Vertigo (BPPV) is thought to be caused by a disturbance in the otolith particles. These are the crystals of calcium carbonate within inner ear fluid that pull on sensory hair cells during movement and so stimulate the vestibular nerve to send positional information to the brain.
Vertigo is when a person feels as if they or the objects around them are moving when they are not.Often it feels like a spinning or swaying movement.This may be associated with nausea, vomiting, sweating, or difficulties walking. It is typically worsened when the head is moved. Vertigo is the most common type of dizziness.

The most common diseases that result in vertigo are benign paroxysmal positional vertigo, Ménière's disease, and labyrinthitis.Less common causes include stroke, brain tumors, brain injury, multiple sclerosis, and migraines.Physiologic vertigo may occur following being exposed to motion for a prolonged period such as when on a ship or simply following spinning with the eyes closed.Other causes may include toxin exposures such as to carbon monoxide, alcohol, or aspirin.[5] Vertigo is a problem in a part of the vestibular system. Other causes of dizziness include presyncope, disequilibrium, and non-specific dizziness.
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