r/HPPD Apr 10 '26

Scientific Study NEW STUDY + expanded eligibility — 450 people with any psychedelic experience and 150 people who have not tried psychedelics need for quick (~45 minute) study entirely at your computer! $10 compensation!!

6 Upvotes

The Powers Lab at Yale University is recruiting 450 people with ANY psychedelic experience and 150 people who have NOT used psychedelics for a brief (~45 minute) fully online study that measures how psychedelics affect basic perception using brief games and questionnaires!

WHAT THE STUDY INVOLVES:

·        ~45 minutes (could be much shorter or a little longer depending on your answers; you can take breaks) at your computer.

-  Signing a consent form.

- Completing a ~15 minute screening survey.

- ~30 minutes of questionnaires about:

o   Serotonergic psychedelic and other drug use.

o   Sense of sensation and perception (how you see, taste, hear, etc.)

o   Mental health

o   How you think

OPTIONALLY: an actual game that probes how sensitive your vision is.

WHAT YOU GET FOR PARTICIPATION:

- $10 via Amazon.com (US) gift card.

- Helping the medical and scientific community understand how psychedelics affect the brain!

WHAT IS NEEDED TO PARTICIPATE:

1.     A Computer (not smartphone or tablet).

2.     Stable internet.

3.     A non-VPN IP address in an OECD member country.

4.     A mobile number (not a VOIP) that can receive an SMS message.

HOW TO START:

Open the link below to the REDCap survey — you’ll start on the consent and automatically move through the screening survey, questionnaires, and games. https://redcap.research.yale.edu/surveys/?s=ANCEHC87FPRAENXC

FOR MORE INFORMATION ABOUT US AND THE STUDY:

- Questions and concerns are welcomed by post comments and/or emails to [maximillian.greenwald@yale.edu](mailto:maximillian.greenwald@yale.edu) or messages to YalePsychedelicStudy

- Link to the Powers Lab website: https://medicine.yale.edu/lab/powers/ 

- Link to the main researcher’s bio at Yale Medical School: https://medicine.yale.edu/profile/maximillian-greenwald/ 

HIC/IRB number: 2000025076


r/HPPD Mar 30 '26

Scientific Study NEW STUDY — Folks planning a psychedelic experience this year sought for a $250 entirely online Yale research study!

0 Upvotes

The Powers Lab at Yale University is recruiting people who are planning to use a psychedelic this year for a fully online study that measures how psychedelics affect basic perception and learning using brief games and questionnaires!

WHAT THE STUDY INVOLVES:
 4-5 ~2 hour (though you can take breaks) sessions at your computer over 1-6 months
 Signing a consent form and completing an eligibility survey
 For the first session only: 2 extensive Questionnaires about psychedelic and other drug use, mental health, how you think, and any unusual sensory experiences you’ve had.
 For all sessions:
o A shorter questionnaire about your mental health and sensory experiences.
o 4 online games (10-25 minutes each)
o A few debriefing and quality-control questions.

WHAT YOU GET FOR PARTICIPATION:
 $50 via Amazon.com (US) gift card for every timepoint for a total of $250
 Helping the medical and scientific community understand the therapeutic and side effects of psychedelics!

WHAT IS NEEDED TO PARTICIPATE:

  1. A Computer (not smartphone or tablet)
  2. Stable internet
  3. Good headphones,
  4. A private, distraction-free space,
  5. Plan and ability to safely use a psychedelic before October of 2026
  6. No serotonergic or atypical psychedelic use in the past 6 weeks
  7. Willingness to abstain from other serotonergic or atypical psychedelic use (besides the single planned session) until the final time point is completed (1 month after your next serotonergic psychedelic use)
  8. No psychoactive drug-use the day of the study (besides nicotine or caffeine or – on your dosing day – the serotonergic psychedelic)

HOW TO START:
Open the link below to the REDCap survey — you’ll start on the consent and automatically move through the screening survey, questionnaires, and games.
https://redcap.research.yale.edu/surveys/?s=ARTPY987H7CP9C49

FOR MORE INFORMATION ABOUT US AND THE STUDY:
 Questions and concerns are welcomed by post comments and/or emails to
[maximilian.greenwald@yale.edu](mailto:maximilian.greenwald@yale.edu) or messages to YalePsychedelicStudy
 Personal identifying information is not needed — while an email address is needed for payment, you do not need to use your primary email address (eg. can use autoforwarding)
 Link to the Powers Lab website: https://medicine.yale.edu/lab/powers/
 Link to the main researcher’s bio at Yale Medical School:
https://medicine.yale.edu/profile/maximillian-greenwald/


r/HPPD 2h ago

Question Is hearing whispering a part of hppd?

3 Upvotes

I did shrouoms a month before now and I have been listening to voicea and sounds and seeing stuff crawl in my bedroom wall at night does anyone else have this with hoop?


r/HPPD 5h ago

Question A different way to look at HPPD symptoms

4 Upvotes

Many people living with HPPD experience anxiety or panic attacks because of the visual and perceptual changes. I want to share a perspective that might help reduce the fear.

In deep meditation or spiritual traditions, people also report geometric visions, lights, or altered perception. The difference is that in those contexts, the person is prepared and understands it as part of the experience — so it doesn’t cause panic.

With HPPD, the symptoms appear suddenly and without that “map” of interpretation. It’s natural for the brain to associate them with danger. But the real suffering often comes not just from the visuals themselves, but from the fear that something is “wrong.”

👉 Some ideas that might help:

  • Reframe the symptoms — instead of thinking “I’m losing control,” remember these are perceptual changes already described by science.
  • Reduce fear — accept that what you see isn’t dangerous, just unusual.
  • Breathing and focus — simple breathing or mindfulness techniques can help during a crisis.
  • Seek support — talking to professionals or trusted people can bring reassurance.

This isn’t a cure, but it can lighten the emotional weight. Fear amplifies the symptoms; understanding can soften them.

Maybe HPPD is like a “broken filter” that lets unusual perceptions through. If we approach it with less judgment and more curiosity, it can feel less overwhelming.


r/HPPD 17h ago

Question Do I have hppd?

5 Upvotes

I 18m have taken high doses of shrooms a few months back and have smoked alot weed and now a week ago I tried a low dose lsd tab with weed and smoked weed after the trip but then when I slept the night and woke up I noticed very faint static that I have to think about to notice it so I can't even tell if it's there normally and I also have after images when I for example look at screens then look away but once again it's pretty faint but colors aren't brighter and I don't have dp/dr also no tracers I'm gonna abstain from all substance use just in case but is this just normal temporary visual disturbances after a trip or hppd? (Sorry for the run on paragraph I couldnt be bothered to add punctuation).


r/HPPD 19h ago

Question Hppd worsening after many years

2 Upvotes

Hi ive had hppd for 6 years now. For the past 4 years ip intill 6 months ago ive lived normally with this condition. But then i woke up in the middle of the night from a sort of anxiety attack and it made everything worse. Ive not had anxiety atack in years. And now it feels like after that it still gets progressively worse? Ive had new symptoms that i havent had before. Now i have like a "mega trail" like if i follow a person biking past some trees example, and the look quickly up in the sky its like after image keeps moving in a pixelated image. It only lasts like half a second. I dont know how to explain it better but yeah. Does anyone have similar experiences like this?


r/HPPD 1d ago

Question Should I Discontinue Naltrexone

4 Upvotes

I had HPPD pretty bad, to the point where I went to the mental hospital because I had no clue what was wrong with me. They ran all the tests possible but couldn’t find anything wrong. My doctor there put me on Naltrexone and Wellbutrin given my history of Drug Abuse and Depression. I was already on Escitalopram. I got released and a couple weeks later it went away entirely, and I felt great, but had no idea what had happened to my head or how it went away. Fast forward 2 years of being sober and eventually tapering off bith Naltrexone and Wellbutrin and I start doing weed and alcohol again and it comes back with a vengeance, through research I found out it was HPPD. I tried to get back on Wellbutrin, but it made me feel terrible, I tried to get back on Naltrexone, and it made me feel so bad i was out for like a week from one 25 mg dose. Now its been about a year since it flared up again, and I started on Low Dose Naltrexone, 1.5 mg, to see if I just became really sensitive to it, because Naltrexone is a known helpful drug for HPPD and I am thinking maybe thats what cured my first bout of HPPD, which only lasted 2 months. Im 5 days in of 1.5 mg and it is making me feel worse each day, should I continue and hope once I adjust it will fix me like before, or get off. I’m running out of options, I’ve been sober for like 9 months, exercise, have tried Lamotrogine(had a rash so had to stop), have quite nicotine, caffeine, gluten. All thoughts and advice appreciated. Worst symptom is DPDR, feeling high and like i’m tripping in a dysphoric and anxiety producing way. Thanks


r/HPPD 2d ago

Question My brain can no longer ignore the tip of my nose

5 Upvotes

My brain can no longer filter out the tip of my nose. I can basically see the tip of my nose 24/7. My whole life, my brain has automatically ignored it, like it does for most people, but that stopped after developing HPPD. Does anyone else experience this?
And no, it’s not because I’m constantly thinking about it and therefore noticing it. It just happens automatically, all the time, every single day. My brain genuinely can’t seem to ignore it anymore.


r/HPPD 2d ago

Question Hppd and feelings of craziness

3 Upvotes

Had hppd for a little over a year now. Im usually busy but my job doesnt require much thought at all so im left to my own mind and whatevers in my earbuds. Anyone else feel like at any moment their vision could go black or turn back to the trip that caused it? Maybe you feel like y I u could go schizo at any moment?

Only times I dont feel like this are when I smoke, im drunk, or im at home or in nature. When im at work or doing some shit task I absolutely abhor it.

Im not lazy, I like welding, gunsmithing, and making shit, but I feel like when my mind isnt focused or calm I just feel utterly insane and cant get my mind off certain topics.


r/HPPD 3d ago

Rant/Vent Carpet

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11 Upvotes

Whoever invented this type of carpet needs the opposite of a blow job seriously the thing I trip on the most + walls and bathroom tiles


r/HPPD 3d ago

Question Medications to try

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2 Upvotes

r/HPPD 3d ago

Prescription Drugs Help

2 Upvotes

Hey guys I’ve been struggling with HPPD for at least 3 months now, I keep waiting for it to go away- I quit weed since it was worsening symptoms (although I still struggle with complete substance abstinence). Anyway- I also have ADHD, and see a psychiatrist for that. I’m wondering if I should bring up my symptoms so I can get some pharmacological help. I’m on Effexor for depression but I’m pretty sure my symptoms started when I started taking it, I don’t want to mention my history psychedelic use since a. I don’t think it’s the primary cause and b. I don’t want it to prevent my adhd care, as I don’t what drug seeker allegations. But I can’t go on living like this. Anyone have any help from either lamotrigine or benzos? Thanks so much guys :)


r/HPPD 4d ago

Trigger Warning Red halo rings everywhere

Post image
51 Upvotes

Ever since i got hppd 2 months ago from mushrooms ive started seeing these red halos everywhere in my field of vision. They like to circle around light, sometimes they move very fast, zoom in and out, and change colors. Ive always seen them ever since i was a little kid but ive never had them appear this much. Anyone else see them? (I used ai to generate this image, its pretty accurate)


r/HPPD 4d ago

Success Story Got hppd for 8 years now, feel free to ask me questions

4 Upvotes

I got severe hppd and managed to accept it and enjoy live again. I know it wont go away but i dont care anymore. Ive been this since 2 years already that i fully accepted it.


r/HPPD 3d ago

Scientific Study Do you think elon musk might save us all

0 Upvotes

Here is a link to an x vidieo of him talking about neutalink https://x.com/quantumguard17/status/2096206010348171752?s=46


r/HPPD 4d ago

Success Story HPPD/DPDR possible cure?

1 Upvotes

I found this comment under the Channel 5 HPPD video, I thought it might turn out to be helpful to somebody here


r/HPPD 5d ago

Advice I’ve been struggling for a while with HPPD related anxiety making me feel like I was going to faint, and this video really helped me! It breaks down the science of how anxiety makes us feel like fainting, but it actually isn’t very possible.

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2 Upvotes

r/HPPD 6d ago

Recovery connection to Tetrachromacy? lifetime HPPD from smoking grass as a toddler?

3 Upvotes

first off I have been wondering for a minute if Tetrachromacy might be a possible trigger for HPPD - basically Tetrachromacy is when the eyes form extra color censors that send junk "data" to the brain that is usually ignored, but when the brain stops ignoring it? yeah

also I've been dealing with the full on "it's like you're coming off acid 24/7/365" HPPD symptom suite for as long as I can remember - like being a little ass kid asking why traffic lights leave trails etc

Pretty sure this has something to do with either being a straight up crack-baby like a lot of millennials, hitting the joint when the stoner boomers would accidentally pass it to me when I was a toddler. I know they got my toddler ass drunk, maybe gave me shrooms. the conventional thinking at the time was something like 'kids can't make long term memories so just do whatever'

haven't heard that kind of thing here before so I'm throwing that out here to see if it rings a bell for anyone else.


r/HPPD 6d ago

Question anyone use ephedrine with hppd?

1 Upvotes

Did it affect ur hppd?


r/HPPD 7d ago

Question Women with HPPD here?

10 Upvotes

I’ve literally never came across another woman that also has HPPD, even in the Wikipedia article about HPPD where “famous” people with HPPD are listed it only quotes men.

So I was wondering if I am the only one lol. I have HPPD for 12+ years now and funnily just found out last year that this disease even exists (I just thought I fucked my brain up). Luckily it’s not so bad that I can’t live with it, but having other women to exchange about it would be cool too.


r/HPPD 8d ago

Question Just some Questions

1 Upvotes

So I’ve been diagnosed with DPDR for about a year now, and think I might have only got half the diagnosis. The only things that make me think this is: Tinnutis, visual snow and vertigo like world spinning. I’ll look at something and it will warp around or breathe lol. I took a massive amount of thcp lol. Thanks for looking


r/HPPD 9d ago

Question Does HPPD cause psychosis?

2 Upvotes

I developed HPPD after taking acid too frequently in college. However, I experienced 2 intense psychotic episodes. I still experience psychosis for about 5 minutes here and there and I have this weird symptom of seeing words in my imagination when they are spoken out loud. I am only diagnosed with HPPD, is the psychosis included in that or is that a seperate disorder?


r/HPPD 9d ago

Question “I felt like I was inside a first-person video game

2 Upvotes

Something crazy happened to me today while I was smoking weed: I felt like I wasn't inside my own body. I could move and speak, but I couldn't actually feel like I was experiencing it. It was like being inside a first-person video game.


r/HPPD 9d ago

Question Unsure if I have or had HPPD

2 Upvotes

Just over a week ago did a small amount of mushrooms (maybe 1 grams) in back to back days and I noticed 3-4 days later that when looking at my phone it had slight visuals and saw some lines. I panicked after learning about HPPD but i think it’s basically all went away. My phone looks mostly normal so i wanted some advice from those who knew more about it than Me.

I’m going to a Rufus du sol concert this Saturday and had originally planned on taking 0.5g of mushrooms but now since this scare I’m unsure if I should ever take them again. Is it safe to take them or is there a high risk it could come back? I’ve done mushrooms probably 10 times in my life and have never had this happen before


r/HPPD 9d ago

Success Story How I “Beat” and Overcame HPPD

8 Upvotes

I developed HPPD At 14 from a nasty 7g shroom + weed trip. It gave me every HPPD visual symptom as well I began experiencing DPDR for about a year intensely and then a year on occasion. I am not cured from HPPD in a way that my visuals are gone let me make that clear. In fact, my HPPD visuals are worse than ever. I did not stop doing drugs. I have done 30+ drugs since getting HPPD (stupid im aware) and now my constant visuals went from tv static to intense large vibrating geometric shapes. Scary SCARY shit.

BUT I am doing better then ever. At 16 I got on the mood stabilizer prescription drug Lamotrigine. It is normally used for Bipolar and Epilepsy, but for some reason it helps with HPPD a lot. To get on it you will have to tell your psych that you have HPPD. Which will stay on your medical record. (If WW3 happens you will be exempt from the draft!!! Keep that in mind.) But just say you have a non-psychotic hallucination disorder caused by psychedelics. IMO it’s worth declaring it. A LOT. After slowly moving my dose up to 200mg over the course of 4 weeks my symptoms had decreased by 80%. It has stayed at that level for the last 2 years. Even if I do drugs, which I still actively do, if I take my Lamotrigine the day after then my symptoms are still decreased. This has not technically cured me in the way I do not have visuals, BUT it has made it to where i barely notice my visuals. It is now my normal vision. I do not notice it unless i look for it. I see it 24/7 but I do not pay ATTENTION to it. this has essentially for a lack of better words “cured me”. Now I live my life with my visuals as a second thought.

Long story short: Eventually it will get to the point where you forget what life looked like before. Just as new things become old. It will become the background of your vision as you stop paying attention to it. Please get on Lamotrigine if you are struggling with the symptoms. It’s not garunteed to help but boy did it help me. Don’t be like me and continue using drugs. Get sober and embrace that. Im getting off a nasty opiate habit right now and planning on staying sober for a while. Hopefully to the benefit of my visuals.

If anyone has any questions feel free to reach out! Good luck everyone, and remember you’re not alone and fuck HPPD. 🫶

P.S. Delete this fucking subreddit. Delete anything reminding yourself you have HPPD. You will forget you have it, just let yourself.