Treatment of Posterior Benign Paroxysmal Positional Vertigo With Mechanical Rotational Chair.

Inclusion Criteria: * Age above 18 years * Confirmed unilateral p-BPPV (canalithiasis and cupulolithiasis) * Understand written and spoken Danish Exclusion Criteria: * Pregnancy * Weight ≥ 150 kg and or Height ≥ 2m * Not possible to attend follow-up visits * Insufficient cooperation during diagnostic testing or treatment in the mechanical rotational chair * Have received treatment for BPPV in a mechanical rotational chair within the last 6 months * Sedative antihistamines are taken within the past 7 days * Comorbidities: Heart failure (EF\<40), known cerebral aneurysm, cerebrovascular events (\<3 months), and dissection disease * Spontaneous or gaze evoked nystagmus.