Benign paroxysmal positional vertigo (BPPV) .

Rapid relief can be obtained in many cases of BPPV via "canalith repositioning maneuvres"(also known as the" Epley Maneuvre") and the Semont-Liberatory maneuvre.

For more information on these techniques and how they work see www.vestibular.org/understanding-vestibular-disorder