title: Delirium associated with vitamin B12 deficiency after pneumonia.
abstract: A case is presented of a 65-year-old man with chronic schizophrenia who, after four years of remission, developed psychotic symptoms after pneumonia. The patient was found to be deficient in vitamin B12. His psychosis remitted within 5 days of administration of vitamin B12 and folic acid. This case emphasizes the need to measure vitamin B12 in psychogeriatric patients, especially when they present with a severe infection and organic mental symptoms.
authors.affiliation: Ministry of Health, Beer-Yakov Mental Health Center, Israel.
authors.forename: N
authors.initials: N
authors.lastname: Buchman
authors.forename: E
authors.initials: E
authors.lastname: Mendelsson
authors.forename: V
authors.initials: V
authors.lastname: Lerner
authors.forename: M
authors.initials: M
authors.lastname: Kotler
mesh_terms: D000368:Aged; D003693:Delirium / Q000188:drug therapy / Q000209:etiology*; D005492:Folic Acid / Q000627:therapeutic use; D006801:Humans; D008297:Male; D011014:Pneumonia / Q000150:complications*; D014805:Vitamin B 12 / Q000627:therapeutic use*; D014806:Vitamin B 12 Deficiency / Q000150:complications* / Q000523:psychology
chemical_list: D005492:Folic Acid; D014805:Vitamin B 12