Particle re-positioning maneuver
ProcedurePatients with posterior canal BPPV (PC-BPPV) were treated with Epley maneuver. Patients with superior canal (SC-BPPV) were treated with Li or reverse Epley maneuver. Patients with lateral canal (LC) apogeotropic or geotropic nystagmus were treated with Barbeque, Semont's or Gufoni maneuvers. If geotropic or ageotropic type nystagmus is equal intensity on both sides. The involved side was determined according to the patient sense of disturbance or lying down positioning test. If the patient has involvement of both sides according to Dix-Hallpike maneuver. Therapeutic maneuver was applied to the more severe side. All patients were re-evaluated at maximum 7 days.