Hallucinogen Persisting Perception Disorder

Episode 72: When The Trip Doesn’t End with Ed Prideaux

Psychedelics and other drugs can trigger a condition called Hallucinogen Persisting Perception Disorder, a terrible name for a real condition that we don’t have much data on and is poorly understood. But while it’s clear that psychedelics shouldn’t be illegal, it’s also clear we’re still learning about some of the risks. This fascinating and often distressing phenomenon deserves a closer look, but not everything about it is devastatingly tragic, either.

In this episode of Narcotica, co-host Troy Farah talks all about HPPD with Ed Prideaux, a master’s student in psychology at the University of East London with a background in journalism. Ed is currently focused on researching and addressing the problems, possibilities and questions raised by HPPD: a broad, under-researched and not entirely uncommon condition in which people experience sustained and distressing changes to their visual perception (among other effects) after psychedelic trips. Ed has lived with these visual effects for nearly seven years, and is affiliated with a nonprofit launched last year to promote harm reduction around HPPD called the Perception Restoration Foundation.

Follow Ed at https://edprideaux.journoportfolio.com/
Visit the Perception Restoration Foundation at: Perception.Foundation

Some more info on perception as a hallucination: https://www.newstatesman.com/science-tech/2022/02/is-reality-a-hallucination-the-neuroscientist-anil-seth-thinks-so

Some of the studies mentioned in this episode:
The abuse potential of medical psilocybin according to the 8 factors of the Controlled Substances Act
Flashback phenomena after administration of LSD and psilocybin in controlled studies with healthy participants
Adverse effects of psychedelics: From anecdotes and misinformation to systematic science

If you liked this episode, here are others you might enjoy:
Episode 57: Autism, Acid and the Altered Brain with Aaron Orsini and Justine Lee
Episode 64: LSD And Psilocybin For Physical Pain? with Greg McKee and Dr. Johannes Ramaekers
Episode 59: Psychedelic Extinction—How Poaching Endangers Some Psychoactive Plants with Dr. Anya Ermakova

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*Note: Troy says niacin is Vitamin C, it’s actually Vitamin B3. We regret the error.

Producers: Christopher Moraff, Troy Farah, Zachary Siegel
Co-producer: Aaron Ferguson
Music: Glass Boy / Nomad1
Intro voice: Jenny Schaye
Image: David J / Flickr // edit: Troy Farah