Postitional veigo is
Lateral
Superior
Inferior
Posterior
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)
Ear