Hallucinogen Persisting Perceptual Disorder (HPPD)
Sometimes called 'Flashbacks'
GENERAL INFORMATION #
Long-Term Perceptual Disorder (overview of HPPD and flashbacks) by E. Jonathan Arnett
Visual Phenomenology of the LSD Flashback by Henry D. Abraham, MD
Flashbacks: Recurrent Intrusive Images After the Use of LSD by Mardi Horowitz, MD
A Hypothesis of the Mechanisms Underlying Visual Distortions Caused by Psychedelic Drugs (Berkeley term paper)
RESEARCH & JOURNAL ARTICLES #
"Trailing" phenomenon - A Long-Lasting LSD Side Effect by Harvey Asher, MD
ASK EROWID ANSWERS #
EXPERIENCES #
29 Years of Flashbacks From Bad Trip, by Bob from the UK
Toxic Scary Danger, by czekmayte
After the Binge, by ThereAndBack
A Life Cycle, by Halcyon
Like Listening to your Favourite Songs for the First Time, by peruviankush 
Submit a Report to our Experience Vaults
RELATED VAULTS #
OFF-SITE RESOURCES
SECONDARY RESOURCES #
Post-LSD Hallucinosis is associated with decrease in flicker-fusion sensitivities. by Vo Van Toi, H. Abraham, & N. Bursac
Center for Psychological and Spiritual Health
(Note: this resource includes useful information
but is not specifically drug-related)
(Note: this resource includes useful information
but is not specifically drug-related)
JOURNAL ARTICLES #
5-MeO-DIPT-Related HPPD Case Report, Mar 2005, AJP