Trends in hallucinogen‐associated emergency department visits and hospitalizations in California, USA, from 2016 to 2022
Addiction – January 11, 2024
Source: OpenAlex
Summary
Hallucinogen-associated emergency department visits in California dramatically rose by 54% between 2016 and 2022, from 2260 to 3476. This contrasts with a 20% decrease for alcohol and a 15% increase for cannabis. Hallucinogen-related hospitalizations also climbed 55%, from 2556 to 3965, while alcohol and cannabis saw only 1% rises. These trends underscore evolving demands on Medicine and Psychiatry for mental health services, prompting critical consideration in Psychedelics and Drug Studies and Cannabis and Cannabinoid Research.
Abstract
Abstract Background and aims Hallucinogens encompass a diverse range of compounds of increasing scientific and public interest. Risks associated with hallucinogen use are under‐researched and poorly understood. We aimed to compare the trends in hallucinogen‐associated health‐care use with alcohol‐ and cannabis‐associated health‐care use. Design, setting and cases We conducted an ecological study with publicly available data on International Classification of Diseases, 10th Revision (ICD‐10) diagnosis codes associated with emergency department (ED) visits and hospitalizations from the California Department of Healthcare Access and Information (HCAI). HCAI includes primary and secondary ICD‐10 codes reported with ED or hospital discharge from every non‐federal health‐care facility licensed in California, United States, from 2016 to 2022. Measurements ICD‐10 codes were classified as hallucinogen‐, cannabis‐ or alcohol‐associated if they were from the corresponding category in the ICD‐10 block ‘mental and behavioral disorders due to psychoactive substance use’. Findings Observed hallucinogen‐associated ED visits increased by 54% between 2016 and 2022, from 2260 visits to 3476 visits, compared with a 20% decrease in alcohol‐associated ED visits and a 15% increase in cannabis‐associated ED visits. The observed hallucinogen‐associated hospitalizations increased by 55% during the same period, from 2556 to 3965 hospitalizations, compared with a 1% increase in alcohol‐associated hospitalizations and a 1% increase in cannabis‐associated hospitalizations. This rise in hallucinogenic ED visits was significantly different from the trend in cannabis‐associated ( P < 0.001) and alcohol‐associated ( P = 0.005) ED visits. The hallucinogen‐associated hospitalizations trend also significantly differed when compared with cannabis‐ ( P < 0.001) and alcohol‐associated ( P < 0.001) hospitalizations. Conclusions Hallucinogen‐associated emergency department visits and hospitalizations in California, USA, showed a large relative but small absolute increase between 2016 and 2022.