Delirium associated with vitamin B12 deficiency after pneumonia

Nili Buchman, Erica Mendelsson, Vladimir Lerner, Moshe Kotler

    Research output: Contribution to journalArticlepeer-review

    13 Scopus citations


    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.

    Original languageEnglish
    Pages (from-to)356-358
    Number of pages3
    JournalClinical Neuropharmacology
    Issue number6
    StatePublished - 1 Nov 1999


    • Deficiency
    • Delirium
    • Pneumonia
    • Vitamin B12

    ASJC Scopus subject areas

    • Pharmacology
    • Clinical Neurology
    • Pharmacology (medical)


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