title: Vitamin B12 deficiency presenting as an acute confusional state: a case report and review of literature.
abstract: BACKGROUND
  Vitamin B12 deficiency is associated with a wide spectrum of neuro-psychiatric manifestations.
  
  
  RESULTS
  We report a case of a 44 year old female patient referred to the haematology unit with vitamin B12 deficiency presenting as an acute confusional state or delirium. Total resolution of the psychiatric symptoms occurred following parenteral vitamin B12 replacement therapy.
  
  
  CONCLUSIONS
  This case report highlights one of the neuro-psychiatric presentations of vitamin B12 deficiency in a previously healthy individual.
authors.affiliation: Department of Medicine, Makerere University College of Health Sciences and Haematology Unit, Mulago National Referral and Teaching hospital, Kampala Uganda.
authors.forename: D
authors.initials: D
authors.lastname: Kibirige
authors.forename: C
authors.initials: C
authors.lastname: Wekesa
authors.forename: M
authors.initials: M
authors.lastname: Kaddu-Mukasa
authors.forename: M
authors.initials: M
authors.lastname: Waiswa
mesh_terms: D000328:Adult; D003693:Delirium / Q000188:drug therapy / Q000209:etiology*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D016896:Treatment Outcome; D014454:Uganda; D014805:Vitamin B 12 / Q000008:administration & dosage; D014806:Vitamin B 12 Deficiency / Q000150:complications* / Q000175:diagnosis / Q000523:psychology; D014803:Vitamin B Complex / Q000008:administration & dosage
chemical_list: D014803:Vitamin B Complex; D014805:Vitamin B 12
keywords: Vitamin B12 deficiency; acute confusional state; delirium