Differential diagnosis between bppv and mppv in direction-changing positional
For many years, it has gave description as MPPV (Malignat Paroxysmal Positiona l Vertigo) that direction-changing positional nystagmus is caused by central n erve system disorders Recently it became evident that direction-changing positional nystagmus is cau sed by horizontal canal type of BPPV (HC-BPPV). The clinical signs of HC-BPPV and MPPV are closely resembled. They […]