Hallucinogen Persisting Perception Disorder 531
Hallucinogen Persisting Perception Disorder
Diagnostic Criteria 292.89 (F16.983)
A. Following cessation of use of a hallucinogen, the reexperiencing of one or more of the
perceptual symptoms that were experienced while intoxicated with the hallucinogen
(e.g., geometric hallucinations, false perceptions of movement in the peripheral visual
fields, flashes of color, intensified colors, trails of images of moving objects, positive
afterimages, halos around objects, macropsia and micropsia).
B. The symptoms in Criterion A cause clinically significant distress or impairment in so-
cial, occupational, or other important areas of functioning. 
C. The symptoms are not attributable to another  medical condition (e.g., anatomical le-
sions and infections of the brain, visual epilepsies) and are not better explained by an-
other mental disorder (e.g., delirium, ma jor neurocognitive disorder, schizophrenia) or
hypnopompic hallucinations.
Diagnostic Features
The hallmark of hallucinogen persisting percep tion disorder is the reexperiencing, when the
individual is sober, of the pe rceptual disturbances that were  experienced while the individ-
ual was intoxicated with the hallucinogen (C riterion A). The symptoms may include any
perceptual perturbations, but visual disturbanc es tend to be predomin ant. Typical of the ab-
normal visual perceptions are geometric hallucinations, false percep tions of movement in
the peripheral visual fields, flashes of color, in tensified colors, trails of  images of moving ob-
jects (i.e., images left suspended in the path of  a moving object as seen in stroboscopic pho-