Cannabis-induced psychosis presenting to a psychiatric emergency department: a case series
Chia-Heng Lin, Chia-Hsiang Chan
Journal of Substance Use August 17, 2021 DOI: 10.1080/14659891.2021.1968967 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Case series Case report Peer reviewed |
|---|---|
| Sample size | 6 |
| Population | Patients in Taiwan with cannabis-induced psychosis |
| Topics | Cannabis |
| Citations | 1 |
| Key findings | In a series of six patients with cannabis-induced psychosis, two had prior psychotic disorders in remission, four showed violent behavior and two showed lethal suicidal behavior under the influence of cannabis, and two were hospitalized for more than two weeks due to prolonged psychosis. The authors argue that clinicians and cannabis users in Eastern countries should pay more attention to the public risk of violence during cannabis-related psychosis. |
Abstract
Background The trend of legalizing medical cannabis is related to its increased illicit use worldwide. In Taiwan, cannabis has become the fifth most used illicit substance, with continuous increases in its use since 2018; yet, the potential risk of adverse mental health due to cannabis use has not been sufficiently emphasized.Methods In this study, we present the findings from a case series of six patients with cannabis-induced psychosis.Results Two of them had prior psychotic disorders in remission. Four patients showed violent behaviors, and other two showed lethal suicidal behaviors under the influence of cannabis. Two of the six patients were hospitalized for more than 2 weeks owing to the prolonged psychotic state.Conclusions Clinicians, patients with psychosis, and cannabis users in Eastern countries should pay more attention to the complex models of cannabis use and the public risk of related violent behaviors exhibited by patients under psychosis.
Comparable studies
Other case reports and case series on cannabis, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| Hallucinogen persisting perception disorder after psilocybin consumption: a case study 18-year-old man with HPPD after mixed psilocybin and cannabis intoxication | 2005 | Case study | n = 1 |
| Cannabis‐induced Koro in Americans American men aged 22-26 with years of cannabis experience who reported negative... | 2001 | Case series | n = 3 |
| “Hallucinations” Following Acute Cannabis Dosing: A Case Report and Comparison to Other Hallucinogenic Drugs Healthy 30-year-old male | 2018 | Case study | n = 1 |
| Hallucinogen persisting perception disorder: A literature review and three case reports Patients with hallucinogen persisting perception disorder | 2018 | Case series | n = 3 |
| Cannabis Psychosis in Young Psychiatric Inpatients Consecutive psychiatric hospital admissions of patients aged 35 and under | 1986 | Case study | n = 25 |
Citations in the library
Cites 10
- Psychiatric effects of cannabis The British Journal of Psychiatry February 1, 2001
- Effects of cannabis use on outcomes of psychotic disorders: systematic review The British Journal of Psychiatry October 31, 2008
- Cannabidiol in medical marijuana: Research vistas and potential opportunities. Pharmacological Research July 2017
- The temporal dynamics of relationships between cannabis, psychosis and depression among young adults with psychotic disorders: findings from a 10-month prospective study. Psychological Medicine July 1, 2007
- Cannabis and psychosis: an update on course and biological plausible mechanisms. Current Opinion in Psychiatry March 2007
and 5 more in the library