Postitional veigo is
The disease is caused by the disorder of posterior semicircular canal. Otoconial debris when settles in the cupula of the posterior semicircular canal in a critical head position causes displacement of cupula and veigo. (Ref: Diseases of EAR, NOSE AND THROAT by PL DHINGRA - 6th Edition)
Lateral
Superior
Inferior
Posterior
Ear