{Reference Type}: Case Reports {Title}: Recreational nitrous oxide abuse causing B12 deficiency with subacute combined degeneration of the spinal cord: A case report. {Author}: Razaq J;Qureshi S; {Journal}: J Family Med Prim Care {Volume}: 9 {Issue}: 11 {Year}: Nov 2020 暂无{DOI}: 10.4103/jfmpc.jfmpc_1630_20 {Abstract}: The recreational use of nitrous oxide (N2O) is a growing public health concern. Increasing numbers of young individuals are presenting to accident emergency departments complaining of adverse neurological symptoms as a result of N2O induced vitamin B12 deficiency. Despite its increasing popularity, many are still not aware of its devastating potential to cause a myriad of severe longstanding neurological impairment. Herein we present a case that highlights the effects of N2O abuse and the best way to investigate and manage such patients.