[THE SIGNIFICANCE OF TORSIONAL NYSTAGMUS ON THE ROLL REST].

Objectives: To characterize a subgroup of patients that were diagnosed with benign paroxysmal positional vertigo of the posterior semicircular canal pBPPV, with findings of geotropic-torsional nystagmus on the roll rest (RT) that intensified on the Dix-Hallpike exam (DH).

Methods: The study population consisted of patients with the diagnosis of pBPPV. First, the roll test (RT) and then the DH test were performed.