530 Substance-Related and Addictive Disorders
Prevalence
The prevalence of other hallucinogen intoxica tion may be estimated by use of those sub-
stances. In the United States, 1.8% of individuals age 12 years or older report using hallu-
cinogens in the past year. Use is more preval ent among younger individuals, with 3.1% of
12- to 17-year-olds and 7.1% of 18- to 25-year-olds using hallucinogens in the past year,
compared with only 0.7% of individuals ag e 26 years or older. Twelve-month prevalence
for hallucinogen use is more common in ma les (2.4%) than in fe males (1.2%), and even
more so among 18- to 25-year-olds (9.2% for males vs. 5.0% for females). In contrast,
among individuals ages 12–17 years, there are no gender differences (3.1% for both gen-
ders). These figures may be used as proxy es timates for gender-related differences in the
prevalence of other ha llucinogen intoxication. 
Suicide Risk
Other hallucinogen intoxication may lead to in creased suicidality, al though suicide is rare
among users of hallucinogens.
Functional Consequences of 
Other Hallucinogen  Intoxication 
Other hallucinogen intoxication can have serious consequences. The perceptual distur-
bances and impaired judgment associated wi th other hallucinogen intoxication can result
in injuries or fatalities from  automobile crashes, physical fi ghts, or unintentional self-
injury (e.g., attempts to “fly” from high plac es). Environmental factors and the personality