Introduction Benign paroxysmal positional vertigo (BPPV) is a disorder characterised by recurrent, brief episodes of vertigo and distinctive nystagmus, triggered by changes in head position relative to gravity, with an annual incidence of approximately 1.6 per cent.1 Posterior canal BPPV (PCBPPV) is the most common type, accounting for approximately 80–90 per cent of cases.2 With advances in vestibular function testing, the diagnosis and treatment of PC-BPPV have become increasingly refined, with current clinical treatment success rates as high as 90 to 96 per cent.3 While otolith repositioning therapy can quickly relieve vertigo symptoms, a subset of patients continues to experience residual dizziness (RD), including sensations of instability, lightheadedness, floating and non-rotational dizziness after treatment. The incidence of RD has been reported to be as high as 61 per cent.