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Amygdalo-hippocampectomy for pathological aggression.

P Sachdev1, J S Smith, J Matheson

  • 1Neuropsychiatric Institute, Prince Henry Hospital, Sydney, New South Wales.

The Australian and New Zealand Journal of Psychiatry
|December 1, 1992
PubMed
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Unilateral microsurgical amygdalo-hippocampectomy significantly reduced rage and aggression in two patients. One patient also experienced fewer seizures and psychotic episodes after the procedure.

Area of Science:

  • Neurosurgery
  • Epileptology
  • Behavioral Neuroscience

Background:

  • Rage and aggression are complex behaviors potentially linked to limbic system dysfunction.
  • Epilepsy, particularly limbic epilepsy, can be associated with behavioral disturbances.
  • Microsurgical amygdalo-hippocampectomy is a neurosurgical intervention targeting the amygdala and hippocampus.

Observation:

  • Two patients with severe brain damage and epilepsy, and limbic epilepsy respectively, presented with significant rage and aggression.
  • Both patients underwent unilateral microsurgical amygdalo-hippocampectomy to address these behavioral issues.
  • The surgical intervention was performed to control uncontrollable rage and aggression.

Findings:

  • Both patients demonstrated a significant reduction in aggressive behaviors post-surgery.

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  • The patient with limbic epilepsy also experienced a decrease in seizure frequency and psychotic episodes.
  • The study highlights the potential of targeted neurosurgery in managing severe behavioral disturbances.

    • Implications:

    • These findings suggest a crucial role for the amygdala and hippocampus in the neurophysiological basis of rage and aggression.
    • Unilateral amygdalo-hippocampectomy may be a viable therapeutic option for select patients with intractable aggression and epilepsy.
    • Further research is warranted to explore the precise mechanisms and long-term efficacy of this surgical approach.