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Nitrogen Narcosis Topic Guide

Nitrogen Narcosis Nitrogen Narcosis: Nitrogen narcosis is an intoxicating effect caused by breathing nitrogen under pressure. Nitrogen makes up one component of the gas in scuba tanks. Symptoms include:
  • lightheadedness,
  • poor judgement,
  • hallucinations, and
  • coma in serious cases.
This usually occurs in divers who descend below 33 feet of water. Ascending cures the problem.