The DSM-IV provides the following diagnostic criteria for 292.89
Hallucinogen Persisting Perception Disorder (Flashbacks):
A. [Essential Feature] The reexperiencing,
following cessation of use of a hallucinogen, 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, flahses 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 social, occupational, or other important areas of
functioning.
C. The symptoms are not due to a general medical condition
(e.g., anatomical lesions and infections of the brain, visual epilepsies) and
are not better accounted for by another mental disorder (e.g., delirium,
dementia, Schizophrenia) or hypnopompic
hallucinations.
Associated features:
¤ Since the symptoms of HPPD cause
marked distress, there are several complications that may occur simultaneously
with the disorder.
¤ Complications include the following:
á Major Depression
á Panic Disorder
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