Communication brèveCarence en vitamine B12 par toxicité du protoxyde d’azote : une cause méconnue de sclérose combinée de la moelleVitamin B12 deficiency due to nitrous oxide use: Unrecognized cause of combined spinal cord degeneration

Introduction Nitrous oxide is widely used in anesthesia. It is usually safe but may be associated with severe side effects when it is used repeatedly or on a prolonged time. Here, we report a case of drug-induced subacute combined spinal cord degeneration related to cobalamin deficiency.