title: Paroxysmal positional vertigo in vitamin B12 deficiency.
mesh_terms: D005260:Female; D006801:Humans; D008875:Middle Aged; D009759:Nystagmus, Pathologic / Q000209:etiology; D011187:Posture; D014717:Vertigo / Q000209:etiology*; D014806:Vitamin B 12 Deficiency / Q000150:complications* / Q000175:diagnosis