title: Vitamin B12 deficiency presenting with an acute reversible extrapyramidal syndrome.
authors.forename: M A
authors.initials: MA
authors.lastname: Joy
mesh_terms: D000208:Acute Disease; D001480:Basal Ganglia Diseases / Q000175:diagnosis* / Q000209:etiology*; D006801:Humans; D014806:Vitamin B 12 Deficiency / Q000150:complications* / Q000175:diagnosis*