“…[42][43][44] There have been past reviews on inhalant and N 2 O abuse, including two recent overviews of recreational N 2 O use, prevalence and risk. 35,[45][46][47] Nonetheless, given the apparent increase in case reports on N 2 O abuse and reports of multiple sequelae previously of unknown etiology, an updated and comprehensive review of the case literature on N 2 O abuse and its clinical manifestations is indicated. In this review we summarize the neurologic, psychiatric, and other medical findings associated with N 2 O abuse.…”