title: Positional vertigo: aetiology and clinical significance.
mesh_terms: D002528:Cerebellar Neoplasms / Q000150:complications*; D002561:Cerebrovascular Disorders / Q000150:complications*; D006259:Craniocerebral Trauma / Q000150:complications*; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000150:complications*; D009759:Nystagmus, Pathologic / Q000209:etiology; D010033:Otitis Media / Q000150:complications*; D011187:Posture; D014717:Vertigo / Q000209:etiology*