In the otolith organs, a tiny part of your ear that monitors head movements and position, there are calcium crystals called otoconia or ear rocks that help the organs understand where your head is in relation to gravity. Sometimes these crystals become dislodged from the otolith organs and move to the semicircular canals, another group of small structures with fluids and hairs, responsible for monitoring the rotation and balance of your head. If the crystals become lodged in the semicircular canals, they disrupt and confuse how the body perceives the movement of the head, which can result in vertigo.
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