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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
Author(s) -
LevRan Shaul,
Feingold Daniel,
Goodman Craig,
Lerner Arturo G.
Publication year - 2017
Publication title -
the american journal on addictions
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.997
H-Index - 76
eISSN - 1521-0391
pISSN - 1055-0496
DOI - 10.1111/ajad.12577
Subject(s) - psychology , perception , visual disturbance , visual perception , developmental psychology , neuroscience , medicine , surgery
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)