One Third Report HPPD After Psychedelics
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By
April 28, 2025
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3 min
A study of adults who used psychedelics found that about 33% experienced visual effects resembling hallucinogen persisting perception disorder (HPPD) 4 weeks afterward, but less than 1% found them distressing. Delusional thoughts reduced significantly, especially in those who had only used psychedelics a few times prior. Younger participants, women, and those with psychiatric conditions were more likely to report HPPD symptoms. Most participants were young adults with a mean age of 28.9 years.
1. 33% of adults who used psychedelics experienced visual effects resembling HPPD 4 weeks afterward. 2. Delusional thoughts significantly reduced following psychedelic use. 3. Younger participants, women, and those with psychiatric conditions were more likely to report HPPD symptoms. 4. Most participants were young adults with a mean age of 28.9 years. 5. Less than 1% of participants found the effects distressing.
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