Original Research J Clin Psychiatry June 2026

Hallucinogen-Psychosis Associations Are Confounded by Baseline Psychiatric History

Full Article Read the complete peer-reviewed article in J Clin Psychiatry. Clinical Summary Patients who present after hallucinogen-related admissions often look high risk for later psychosis, but that signal can be misleading if clinicians focus only on the substance exposure and miss the psychiatric history that came first. This study shows that baseline psychotic and other psychiatric disorders were much more common before hallucinogen-related admissions, reframing postadmission psychosis risk as a marker of underlying vulnerability rather than hallucinogen-specific causation alone. FAQ Did hallucinogen-related admissions predict later psychosis after baseline psychiatric history was taken into account? 10 questions
Key Takeaways In this claims cohort, baseline psychotic disorders were far more common before a hallucinogen-related admission than before other substance-related admissions (19.2% vs 6.3%), suggesting that outpatient psychosis history can materially change how postexposure risk is interpreted. 6 takeaways Clinical Guide How should clinicians assess short-term psychosis risk after a hallucinogen-related admission? 7 steps Clinical Guide How should clinicians screen baseline psychiatric history when considering a patient for psychedelic therapy? 6 steps
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