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Comparing triggers to visual disturbances among individuals with positive vs negative experiences of hallucinogen-persisting perception disorder (HPPD) following LSD use.

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Title: Comparing triggers to visual disturbances among individuals with positive vs negative experiences of hallucinogen-persisting perception disorder (HPPD) following LSD use.
Authors: Lev‐Ran, Shaul, Feingold, Daniel, Goodman, Craig, Lerner, Arturo G.
Source: American Journal on Addictions. Sep2017, Vol. 26 Issue 6, p568-571. 4p.
Subjects: Flashbacks (Memory), Illusion (Philosophy), LSD (Drug), Hallucinogenic drugs, Drug abuse, Psychology, Agnosia, Perceptual disorders, Questionnaires, Visual perception, Pharmacodynamics
Abstract: Background and Ojective: Exploring differences in visual disturbances and triggers between Hallucinogen-Persisting-Perceptual-Disorder (HPPD) Type I ("positive/benign") and II ("negative/distressing").Methods: Forty individuals with HPPD and prior LSD use completed clinical questionnaires.Results: The most common type of visual disturbances among individuals with HPPD I and II was slow movement of still objects and trailing phenomena, respectively. Those with HPPD I were more likely to report experiencing disturbances in dark environment, while looking at a still or moving object and during sexual intercourse.Discussion and Conclusions: HPPD I and II differ in terms of visual disturbances and triggers, possibly representing different phenomena existing on the same spectrum.Scientific Significance: Our study indicating differences in triggers to HPPD I and II adds to existing literature on differences in visual disturbances between the two subtypes. Further research elucidating additional differences between the subtypes of HPPD is needed. (Am J Addict 2017;26:568-571). [ABSTRACT FROM AUTHOR]
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Database: Psychology and Behavioral Sciences Collection
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Abstract:<bold>Background and Ojective: </bold>Exploring differences in visual disturbances and triggers between Hallucinogen-Persisting-Perceptual-Disorder (HPPD) Type I ("positive/benign") and II ("negative/distressing").<bold>Methods: </bold>Forty individuals with HPPD and prior LSD use completed clinical questionnaires.<bold>Results: </bold>The most common type of visual disturbances among individuals with HPPD I and II was slow movement of still objects and trailing phenomena, respectively. Those with HPPD I were more likely to report experiencing disturbances in dark environment, while looking at a still or moving object and during sexual intercourse.<bold>Discussion and Conclusions: </bold>HPPD I and II differ in terms of visual disturbances and triggers, possibly representing different phenomena existing on the same spectrum.<bold>Scientific Significance: </bold>Our study indicating differences in triggers to HPPD I and II adds to existing literature on differences in visual disturbances between the two subtypes. Further research elucidating additional differences between the subtypes of HPPD is needed. (Am J Addict 2017;26:568-571). [ABSTRACT FROM AUTHOR]
ISSN:10550496
DOI:10.1111/ajad.12577