Related Experiment Video
Updated: Jan 27, 2026

Visualization of IL-22-expressing Lymphocytes Using Reporter Mice
Published on: January 25, 2017
Naltrexone-associated Visual Hallucinations: A Case Report
Dae Bo Lee1, Young Sup Woo2, Won-Myong Bahk2
1Department of Psychiatry, National Forensic Hospital.
Abstract:
Naltrexone is a competitive antagonist of Μ, δ, and κ opioid receptors. Naltrexone has been investigated for use an as anti-obesity agent in both the general population and in patients with severe mental illness, including schizophrenia. In patients with schizophrenia, however, potential psychotic symptoms due to adverse effects of naltrexone have not been investigated. Our case study, a relevant case report, and some related articles suggest that naltrexone might be associated with the emergence of visual hallucinations, which clinicians should be aware of.
Insights
Naltrexone, an opioid receptor antagonist, may cause visual hallucinations in schizophrenia patients. Clinicians should monitor for this potential adverse effect when prescribing naltrexone for obesity.
Area of Science:
- Neuroscience
- Psychiatry
- Pharmacology
Background:
- Naltrexone is an opioid receptor antagonist studied for anti-obesity effects.
- Its use in patients with severe mental illness, like schizophrenia, is being explored.
- Adverse psychotic effects of naltrexone in schizophrenia patients remain under-investigated.
Purpose of the Study:
- To investigate potential psychotic symptoms, specifically visual hallucinations, associated with naltrexone use in schizophrenia patients.
- To raise clinical awareness regarding naltrexone's potential adverse effects in this vulnerable population.
Main Methods:
- A case study approach was employed.
- A relevant case report and literature review were conducted.
Main Results:
- Findings suggest a potential association between naltrexone and the emergence of visual hallucinations.
- This adverse effect may occur in patients with schizophrenia receiving naltrexone treatment.
Conclusions:
- Naltrexone may be linked to visual hallucinations in schizophrenia patients.
- Clinicians should exercise caution and monitor for these psychotic symptoms.
Related Concept Videos
Positive Symptoms Schizophrenia: Hallucinations and Delusions
Hallucinations
Hallucinations in...
Positive Symptoms of Schizophrenia: Hallucinations and Delusions
Thought Disorders
Disorganized and unusual thought processes mark thought disorders in schizophrenia. One key feature is disorganized speech, where an individual's conversation includes...
Data Reporting and Recording
Types of Reports I: Hands-off Report
Following are the key components and categories of hand-off reports:
Purpose and Process:
Types of Reports II: Incident or Occurrence Report
Purposes:
In the healthcare industry, reports play a crucial role in documenting incidents within an agency. The primary objective of these reports is to ensure patient safety, uphold the...
Types of Reports III: Telephone and Verbal Reports
Here's an overview of each type:
Telephone Orders

