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Am J Addict. 2017 Sep;26(6):568-571. doi: 10.1111/ajad.12577. Epub 2017 Jun 27.

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

Author information

1
Lev Hasharon Mental Health Center, Pardessya, Israel.
2
Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.
3
Ariel University, Ariel, Israel.

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).

PMID:
28654720
DOI:
10.1111/ajad.12577
[Indexed for MEDLINE]

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