The Limbic System in Co-Occurring Substance Use and Anxiety Disorders: A Narrative Review Using the RDoC Framework
2024

The Limbic System in Co-Occurring Substance Use and Anxiety Disorders

publication Evidence: moderate

Author Information

Author(s): Lin Esther R.-H., Veenker Faith N., Manza Peter, Yonga Michele-Vera, Abey Sarah, Wang Gene-Jack, Volkow Nora D.

Primary Institution: National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health

Hypothesis

What are the neurobiological processes underlying the comorbidity of substance use disorders and anxiety disorders?

Conclusion

A better understanding of the neural mechanisms involved in the comorbidity of substance use and anxiety disorders can lead to more effective treatments.

Supporting Evidence

  • Substance use disorders and anxiety disorders are highly comorbid, leading to worse clinical outcomes.
  • The RDoC framework helps in understanding the neurobiological underpinnings of these comorbidities.
  • Anxiety can exacerbate substance use and vice versa, creating a cycle of worsening symptoms.

Takeaway

This study looks at how problems with drugs and anxiety can happen together and affect each other, making it harder for people to feel better.

Methodology

The authors conducted a narrative review of studies from 1990 to 2024, focusing on anxiety disorder diagnoses and their relationship with substance use disorders.

Potential Biases

The narrative review format may introduce bias due to selective reporting of studies.

Limitations

The review's cross-sectional nature makes it difficult to determine causality, and it may be subject to author bias.

Digital Object Identifier (DOI)

10.3390/brainsci14121285

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