Neuropathy following abuse of nitrous oxide

Abstract
A disabling peripheral neuropathy, mainly sensory, developed in 3 health workers who habitually abused N2O. The distinctive clinical picture included patterns of numbness that were radicular rather than purely distal, and a reverse Lhermitte sign, in the absence of signs of spinal cord involvement. Nerve conduction studies suggested an axonal rather than demyelinative neuropathy. The neurologic disorder improved slowly when the patients abstained from further N2O abuse.

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