Again from Wikipedia:

“Within the labyrinth of the inner ear lie collections of calcium crystals known as otoconia. In patients with BPPV, the otoconia are dislodged from their usual position within the utricle and they migrate over time into one of the semicircular canals (the posterior canal is most commonly affected due to its anatomical position). When the head is reoriented relative to gravity, the gravity-dependent movement of the heavier otoconial debris (colloquially “ear rocks”) within the affected semicircular canal causes abnormal (pathological) fluid endolymph displacement and a resultant sensation of vertigo. This more common condition is known as canalithiasis.”

IN OTHER WORDS:  These little particles go flying around inside your ears, and it make you dizzy.

Things that can trigger these little devils to go flying around:

• Stress
• Lack of sleep
• Air pressure changes
• Sudden head movements
• Allergies?
• Certain foods?
• Drugs?
• Absolutely nothing (vertigo hits you out of nowhere)

Posted under Causes