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[Nitrous oxide-induced polyneuropathy]
S H P Conjaerts1, J E Bruijnes, K Beerhorst
1Zuyderland Medisch Centrum, afd. Neurologie, locatie Heerlen.
Nederlands Tijdschrift Voor Geneeskunde
|December 2, 2017
Summary
Laughing gas (nitrous oxide) abuse can cause nerve damage, specifically polyneuropathy, by depleting vitamin B12. Early abstinence and vitamin B12 treatment can reverse these effects.
Area of Science:
- Neurology
- Toxicology
Background:
- Nitrous oxide (N2O), commonly known as laughing gas, is increasingly used recreationally for its euphoric effects.
- While often perceived as harmless, N2O is a known neurotoxin that inactivates vitamin B12.
- Vitamin B12 is crucial for myelin synthesis, and its deficiency can lead to spinal cord degeneration.
Observation:
- This report details two cases of young adults presenting with subacute axonal polyneuropathy.
- The patients, a 17-year-old female and a 19-year-old male, abused laughing gas.
- Their symptoms included neurological deficits consistent with peripheral nerve damage.
Findings:
- Laughing gas abuse was identified as the cause of vitamin B12 deficiency in both patients.
- This deficiency led to subacute axonal polyneuropathy, a less commonly recognized complication of N2O abuse.
- Both patients showed symptomatic improvement after discontinuing laughing gas and receiving vitamin B12 supplementation.
Implications:
- These cases highlight polyneuropathy as a significant, yet treatable, neurological complication of recreational nitrous oxide use.
- Early diagnosis and intervention, including vitamin B12 repletion, are critical for managing N2O-induced neurotoxicity.
- Awareness among healthcare providers about this adverse effect of laughing gas is essential for prompt patient care.
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