5. Recurrent hallucinogen use resulting in a failure to fulfill major role obligations at
work, school, or home (e.g., repeated absences from work or poor work perfor-
mance related to hallucinogen use; hallucinogen-related absences, suspensions,
or expulsions from school; neglect of children or household).
6. Continued hallucinogen use despite having persistent or recurrent social or inter-
personal problems caused or exacerbated by the effects of the hallucinogen (e.g.,
arguments with a spouse about consequences of intoxication; physical fights).
7. Important social, occupational, or recreat ional activities are given up or reduced be-
cause of hallucinogen use.
8. Recurrent hallucinogen use in situations in which it is physically hazardous (e.g.,
driving an automobile or operating a mach ine when impaired by the hallucinogen).
9. Hallucinogen use is continued despite knowledge of having a persistent or recur-
rent physical or psychological problem t hat is likely to have been caused or exac-
erbated by the hallucinogen.
10. Tolerance, as defined by either of the following: 
a. A need for markedly increased amounts of the hallucinogen to achieve intoxi-
cation or desired effect.
b. A markedly diminished effect with continued use of the same amount of the hal-
lucinogen.
Note: Withdrawal symptoms and signs are not established for hallucinogens, and so this
criterion does not apply.