Association of Hallucinogen Persisting Perception Disorder with Trait Neuroticism and Mental Health Symptoms.
Journal of Psychoactive Drugs 2025 Morgan Hadley, Alicia Halliday, James Stone 1 citation
Hallucinogen Persisting Perception Disorder (HPPD) is considered rare in hallucinogen users although there are conflicting reports about its incidence and prevalence. HPPD may be more common in those with trait neuroticism. In this study, we invited hallucinogen and other drug users to complete an online questionnaire about their use of hallucinogens, their experience of HPPD symptoms, and...