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    1. MAIN AND GENERAL FORUM

      This is the catch-all forum for posts. Discuss anything related to Hallucinogen Persisting Perception Disorder (HPPD) here.

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    2. Introductions

      A place to introduce yourself to the community and what you hope to seek out on this site. New members may share their experience and onset of HPPD and what drug(s) triggered it.

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    3. Symptoms: Descriptions, Discussion, Debate

      What are the symptoms? What do you feel encompasses HPPD?

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    4. Medications & Other Treatments

      The place to discuss pharmacological and other treatment options.

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  2. Active and Future Research

    1. Research Articles, Publications and Studies

      Articles, publications and studies for review and discussion.

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  3. Community Area

    1. Community Open Space

      This is a location to talk about anything except your symptoms. Be respectful of other users, but any topic within the rules are open for discussion.

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    2. Forum Information, Questions and Suggestions

      Is the forum missing something? Do you have any ideas or suggestions? Any problems or questions? Post them here.

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  • Hallucinogen Persisting Perception Disorder (HPPD) support forum - HPPD, flashbacks, drug-induced visual snow syndrome and depersonalization/derealization.

    Common HPPD symptoms: visual snow, palinopsia (trails/afterimages), increased BFEP, increased floaters, ghosting, halos, starbursts, macropsia/micropsia, geometric hallucinations, closed-eye visuals, flashbacks, depersonalization/derealization, anxiety, depression, brain fog, cognitive dysfunction, tinnitus.

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    • @HDDeer Interesting.  Your post got me thinking.  When I was a little kid I used to see recognizable shapes in the trees between the branches.  I think it's called negative space.  When I looked at the stars I'd see cobweb like threads connecting the stars and I'd immediately see shapes.  If I stared up under the trees at night I'd see cartoon like animations play out in the vague outlines of the branches and leaves.  This was long before I had tried anything psychoactive.  I was basically a normal kid with no indication of mental illness or schizophrenia.   I'm starting to think my brain is simply wired to see patterns.  I'm wondering if these natural abilities, for lack of a better term, are indicators for contracting hppd or at least the flavor of hppd I have.  When my daughter was about 5 she made a comment about seeing shapes between branches.  My Mom has made similar comments over the years.  Perhaps there is something genetic at play. I realize none of this is concrete but your post brought back these memories and helped me connect some dots.  
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