Psychological medicine · 2026
Post-traumatic stress disorder symptoms following psychedelic use: a naturalistic survey study.
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Evens Ricarda, Uyar Abdo, Gosslau Emily, Dambeck Franziska, Repantis Dimitris, Wolff Max, Lueken Ulrike
Аннотация
BACKGROUND: While clinical research on psychedelics often reports mild and transient side effects, broader survey studies indicate that a subset of users experiences lasting adverse mental health effects. This study investigated whether some of these meet diagnostic criteria for post-traumatic stress disorder (PTSD).
METHODS: A cross-sectional online survey (N = 243) was conducted with individuals reporting distressing psychedelic experiences with effects persisting beyond the acute phase (convenience sampling). It assessed characteristics of the acute experience, post-traumatic stress, post-traumatic growth, and coping strategies.
RESULTS: A total of 31.3% of participants met the DSM-5 criteria for PTSD as measured by self-report measures. PTSD symptom severity was strongly associated with characteristics of the acute experience. Avoidance-related experiences significantly predicted greater PTSD symptoms, while acceptance-related experiences were linked to lower symptom severity. Post-traumatic growth was unrelated to the intensity of the challenging experience or avoidance but positively predicted by acceptance-related experiences. Post-psychedelic help-seeking behavior was common: most consulted online resources or spoke with friends and family, though psychotherapy was rated the most helpful intervention.
DISCUSSION: Findings provide the first systematic evidence that difficult psychedelic experiences can be associated with later PTSD symptoms and highlight the critical role of acute psychological processes in shaping long-term outcomes. Since the survey targeted individuals with highly challenging acute experiences, the data do not allow the extrapolation of prevalence estimates to the broader population of psychedelic users. As psychedelic use expands beyond clinical settings, access to trauma-informed care and targeted integration support will be essential to minimize harm and support recovery.
METHODS: A cross-sectional online survey (N = 243) was conducted with individuals reporting distressing psychedelic experiences with effects persisting beyond the acute phase (convenience sampling). It assessed characteristics of the acute experience, post-traumatic stress, post-traumatic growth, and coping strategies.
RESULTS: A total of 31.3% of participants met the DSM-5 criteria for PTSD as measured by self-report measures. PTSD symptom severity was strongly associated with characteristics of the acute experience. Avoidance-related experiences significantly predicted greater PTSD symptoms, while acceptance-related experiences were linked to lower symptom severity. Post-traumatic growth was unrelated to the intensity of the challenging experience or avoidance but positively predicted by acceptance-related experiences. Post-psychedelic help-seeking behavior was common: most consulted online resources or spoke with friends and family, though psychotherapy was rated the most helpful intervention.
DISCUSSION: Findings provide the first systematic evidence that difficult psychedelic experiences can be associated with later PTSD symptoms and highlight the critical role of acute psychological processes in shaping long-term outcomes. Since the survey targeted individuals with highly challenging acute experiences, the data do not allow the extrapolation of prevalence estimates to the broader population of psychedelic users. As psychedelic use expands beyond clinical settings, access to trauma-informed care and targeted integration support will be essential to minimize harm and support recovery.