Thomas Davies

A previously fit and well 19 year old male presents with a progressive ataxic - sensory neuropathy worsening over 2 - 3 weeks. History and investigations revealed extensive recreational use of nitrous oxide resulting in functional B12 deficiency and consequent subacute combined degeneration of the cord. Abstinence and B12 supplementation resulted in a rapid and full neurological recovery. This case report highlights the importance of considering ni