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  • Title: Not a Laughing Matter: When Nitrous Oxide Causes Functional Vitamin B12 Deficiency.
    Author: Daniel Y, Freeman S.
    Journal: R I Med J (2013); 2024 Feb 01; 107(2):13-15. PubMed ID: 38285744.
    Abstract:
    Subacute combined degeneration (SCD) is an acquired neurologic complication from prolonged vitamin B12 deficiency. As a result of dorsal and lateral spinal cord column degeneration, patients present with a range of neurological symptoms, including paresthesias, ataxia, and muscle weakness. Without prompt treatment, irreversible nerve damage occurs. Here we present a young man who developed progressive ascending paresthesias and lower extremity weakness after escalated nitrous oxide use. This case highlights the importance of considering SCD from nitrous oxide toxicity when patients present with progressive ataxia, paresthesia, and lower extremity weakness.
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