Neurosurgery for Psychiatric Disorders: Reassessing the Risk of Cognitive Side Effects
Challenging a Long-Standing Barrier in Psychiatry
For decades, one of the most persistent barriers to the use of neurosurgical interventions in psychiatry has been the concern over neuropsychological side effects (NPSE).
These concerns are deeply rooted in the history of early psychosurgical procedures, which were associated with significant morbidity and have shaped both public perception and clinical hesitation.
A newly published systematic review and meta-analysis, conducted by an international consortium of experts—including our team at UTHealth Houston—provides a critical reassessment of this issue.
Why This Matters Now
Psychiatric disorders are among the leading causes of global disability, and a substantial proportion of patients remain treatment-resistant despite:
- Pharmacotherapy
- Psychotherapy
- Neuromodulation (TMS, ECT)
In fact:
- 20–60% of patients with major depression
- 20–40% with OCD
- 20–60% with schizophrenia
may not respond adequately to conventional treatments.
For these patients, neurosurgery for psychiatric disorders (NPD) may represent a last-resort—but potentially life-changing—intervention.
What Did This Study Do?
This study analyzed data from:
- 48 studies
- 2,678 patients
across four major surgical categories:
- Neurosurgery for psychiatric disorders (NPD)
- Epilepsy surgery
- Neurovascular surgery
- Neuro-oncological surgery
The goal was straightforward but important:
To determine whether neuropsychological risks in psychiatric neurosurgery are truly higher than in other accepted neurosurgical procedures
Key Findings
Neuropsychological Risks Are Comparable
The study found that:
- Transient NPSE: ~0.9% to 11.5% in psychiatric neurosurgery
- Permanent NPSE: ~0.9% to 2.0%
These rates were comparable to those observed in epilepsy, vascular, and oncological neurosurgery.
This directly challenges the assumption that psychiatric neurosurgery carries disproportionate cognitive risk.
In Some Domains, Outcomes Are Better
Compared to epilepsy surgery, psychiatric neurosurgery showed:
- Better outcomes in:
- Memory
- Language
- Social cognition
However, there were trade-offs:
- Slightly worse outcomes in:
- Executive function
- Perceptual-motor function
Compared to Other Neurosurgical Fields
- Versus vascular surgery:
- Better executive function
- Worse complex attention
- Versus oncological surgery:
- Fewer permanent deficits in several domains
- Slightly lower language performance
The Bigger Message: A Misperception
One of the most important conclusions of this work is:
Concerns about neuropsychological side effects in modern psychiatric neurosurgery are likely exaggerated
These concerns are largely based on:
- Historical procedures (e.g., prefrontal lobotomy)
- Outdated techniques
- Cultural and media narratives
Modern procedures, in contrast, are:
- Highly targeted
- Image-guided (MRI-based)
- Performed with stereotactic precision
Clinical Implications
1️. Reconsidering Neurosurgery in TRD and OCD
For carefully selected patients, neurosurgical interventions should be viewed as:
A valid and evidence-based option, not an extreme last resort
2️. Reducing Stigma
This study provides strong evidence to:
- Educate clinicians
- Inform patients
- Shift public perception
3️. Expanding Access to Care
Underutilization of these treatments is not only a scientific issue—it is a systems and perception problem.
Addressing misconceptions could significantly expand access for patients with severe, refractory illness.
4️. Aligning Psychiatry with Other Specialties
Other fields routinely accept similar or higher risks:
- Epilepsy surgery
- Brain tumor resection
- Vascular neurosurgery
Yet psychiatric neurosurgery remains more restricted.
This discrepancy deserves reconsideration.
UTHealth Houston Perspective
At the Center for Interventional Psychiatry at UTHealth Houston, we are committed to:
- Advancing evidence-based interventional treatments
- Reducing stigma around neuromodulation and neurosurgery
- Developing comprehensive care pathways for treatment-resistant disorders
This work reflects a global effort to move the field forward by bringing together neurosurgeons, psychiatrists, neurologists, and neuroscientists.
Final Thoughts
Neurosurgery for psychiatric disorders remains one of the most underutilized tools in modern medicine—not because of lack of evidence, but because of persistent misconceptions.
This study provides a clear message:
Modern psychiatric neurosurgery is no more dangerous than other accepted brain surgeries
For patients with severe, treatment-resistant conditions, this represents an important shift:
- From fear → to evidence
- From stigma → to science
- From last resort → to considered option
Reference
Vilela-Filho O, Bannach MA, Lino-Filho AM, et al. Comparison of neuropsychological side effects between contemporary radiofrequency ablative neurosurgery for psychiatric disorders and conventional neurosurgical procedures: systematic review and meta-analysis. Journal of Neurology, Neurosurgery & Psychiatry. 2026.
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Disclaimer
This article was created with the assistance of artificial intelligence (AI) to help organize and refine the presentation of scientific information. All medical and scientific content has been reviewed and approved by Joao L. de Quevedo, MD, PhD, Executive Director of the Center for Interventional Psychiatry at the John S. Dunn Behavioral Sciences Center at UTHealth Houston. The content is intended for educational and informational purposes only and does not substitute for professional medical advice.