Comparing triggers to visual disturbances among individuals with positive vs negative experiences of hallucinogen-persisting perception disorder (HPPD) following LSD use.
Shaul Lev-Ran, Daniel Feingold, Craig Goodman, Arturo G Lerner
American Journal on Addictions September 2017 DOI: 10.1111/ajad.12577 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Observational study using clinical questionnaires Peer reviewed |
|---|---|
| Sample size | 40 |
| Population | Individuals with HPPD and prior LSD use |
| Topics | LSD |
| Key findings | Among 40 people with HPPD and prior LSD use, Type I was most commonly marked by slow movement of still objects and Type II by trailing phenomena. Type I was more often associated with disturbances in dark environments, while looking at a still or moving object, and during sexual intercourse. The authors propose the subtypes may be different phenomena on the same spectrum and call for further research. |
Abstract
Exploring differences in visual disturbances and triggers between Hallucinogen-Persisting-Perceptual-Disorder (HPPD) Type I ("positive/benign") and II ("negative/distressing"). Forty individuals with HPPD and prior LSD use completed clinical questionnaires. 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. HPPD I and II differ in terms of visual disturbances and triggers, possibly representing different phenomena existing on the same spectrum. 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).
Comparable studies
Other cross-sectional and survey studies on LSD, most cited first.
Citations in the library
Cited by 11
- Hallucinogen Persisting Perception Disorder: Etiology, Clinical Features, and Therapeutic Perspectives Brain Sciences March 16, 2018
- Efficacy and safety of psychedelics for the treatment of mental disorders: A systematic review and meta-analysis. Psychiatry Research May 1, 2024
- The “Endless Trip” among the NPS Users: Psychopathology and Psychopharmacology in the Hallucinogen-Persisting Perception Disorder. A Systematic Review Frontiers in Psychiatry November 20, 2017
- Apophenia, absorption and anxiety: Evidence for individual differences in positive and negative experiences of Hallucinogen Persisting Perceptual Disorder Journal of Psychedelic Studies August 8, 2022
- Hallucinogen persisting perceptual disorder: a scoping review covering frequency, risk factors, prevention, and treatment Expert Opinion on Drug Safety April 15, 2022
and 6 more in the library