Functional Vitamin B12 Deficiency Induced by Nitrous Oxide: Case Report of Acute Psychosis and Severe Neuropathy
BJPsych Open June 1, 2026 Rishabh Bajaj, Ajay Baskaran, Asma Javed
Aims: Recreational nitrous oxide use is increasing and widely seen as low risk, but chronic exposure can inactivate vitamin B12, causing deficiency even with normal serum levels. This may lead to psychiatric, neurological, and haematological symptoms, complicating diagnosis for mental health professionals. Methods: A middle-aged man with no psychiatric history, was brought to the hospital due...