Erowid Psychoactive Vaults : Hallucinogen Persisting Perceptual Disorder (HPPD) / Post-Hallucinogen Perceptual Disorder (PHPD)

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Hallucinogen Persisting Perceptual Disorder
(HPPD)

Take our HPPD Survey! Oct-Dec 2005

GENERAL INFORMATION
HPPD FAQ
Ask Erowid: "I think I have HPPD..."
Long-Term Perceptual Disorder (overview of HPPD and flashbacks) by E. Jonathan Arnett

PRIMARY RESOURCES
HPPD-Related Journal Articles & References
Visual Phenomenology of the LSD Flashback by Henry D. Abraham, MD
Flashbacks: Recurrent Intrusive Images After the Use of LSD by Mardi Horowitz, MD
"Trailing" phenomenon – A Long-Lasting LSD Side Effect by Harvey Asher, MD
Post-LSD Hallucinosis is associated with decrease in flicker-fusion sensitivities. by Vo Van Toi, H. Abraham, & N. Bursac
A Hypothesis of the Mechanisms Underlying Visual Distortions Caused by Psychedelic Drugs (Berkeley term paper)

EXPERIENCES
HPPD and GBL, by Kopentac
HPPD and MDMA, by Anonymous
HPPD is Real, by Something to Kick
Long Term Changes from LSD, by Zbt.
Permanently Altered Vision, by Barnes
» » » MORE » » »

RELATED VAULTS
Visuals Vault

OFFSITE HPPD RESOURCES

PRIMARY RESOURCE
HPPD Online
Stormloader HPPD Site (last updated Jul 2002)

SECONDARY RESOURCES
PHPD thread on MAPS Forum
Center for Psychological and Spiritual Health
(Note: this resource includes useful information
but is not specifically drug-related)

JOURNAL ARTICLES
HPPD: What do we know after 50 years?
5-MeO-DIPT-Related HPPD Case Report, Mar 2005, AJP

Last Modified - Mon, Jan 2, 2006

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