Hallucinogen-persisting perception disorder
MONDO:0100125A perceptual disorder caused by intoxication with hallucinogen drugs, especially LSD. It is characterized by the recurrence of perceptive disturbances that first develop during intoxication. The contents of the perception and visual imagery range extensively and symptoms may include visual disturbances, hallucinations, and psychoses.
4 clinical trials for this condition and its sub-types.
Follow this condition — get notified about new trialsBroader categories
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Microdose of LSD may lift depression mood, early trial hints
Symptom relief CompletedThis study tests whether a very low dose of LSD (26 micrograms) can improve mood in people with depression compared to a placebo. Researchers measure mood changes, sleep quality, and brain activity using EEG. The trial involves 41 adults with depression and aims to see if this ap…
Phase: EARLY_PHASE1 • Sponsor: University of Chicago • Aim: Symptom relief
Last updated Jul 12, 2026 00:00 UTC
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Mind over microdose: study tests if belief alone drives LSD's effects
Knowledge-focused CompletedThis study looks at how a very low dose of LSD (13 micrograms) affects mood and behavior in 48 healthy adults. Some participants will be told exactly what they are getting (LSD or placebo), while others will not know. The goal is to understand whether people's expectations—not ju…
Phase: EARLY_PHASE1 • Sponsor: University of Chicago • Aim: Knowledge-focused
Last updated Jul 11, 2026 00:00 UTC
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LSD study reveals how tiny doses alter perception and choices
Knowledge-focused CompletedThis study looked at how low doses of LSD change the way healthy adults make decisions based on what they see. Thirty participants completed computer tasks that tested their ability to predict and respond to visual patterns. The goal was to understand how LSD influences brain sig…
Phase: NA • Sponsor: University Hospital, Basel, Switzerland • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:00 UTC