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Related Experiment Videos

Gelastic epilepsy--a case report with SPECT studies.

S Khadilkar1, K Menezes, V Lele

  • 1Department of Neurology, Grant Medical College and Sir JJ Group of Hospitals, Mumbai.

The Journal of the Association of Physicians of India
|May 22, 2001
PubMed
Summary

This study reports a case of a young male with lifelong uncontrollable laughter and incontinence. Findings suggest the right cingulate gyrus, not the hypothalamic hamartoma, may be involved in seizure pathway.

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Area of Science:

  • Neurology
  • Neuroimaging
  • Epileptology

Background:

  • Epilepsy is a chronic neurological disorder characterized by recurrent seizures.
  • Hypothalamic hamartomas are rare congenital tumors associated with gelastic seizures and other epilepsy types.

Observation:

  • A 24-year-old male presented with daily gelastic seizures (uncontrollable laughter) and urinary incontinence since age nine.
  • Seizures sometimes progressed to generalized tonic-clonic seizures.
  • Standard neurological exams and video electroencephalography (EEG) were normal.

Findings:

  • Magnetic resonance imaging (MRI) revealed a hypothalamic hamartoma.
  • Interictal single-photon emission computed tomography (SPECT) showed normal perfusion in the hamartoma.
  • Ictal SPECT demonstrated increased perfusion in the right cingulate gyrus during seizures, but not in the hamartoma.

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Implications:

  • This case highlights the diagnostic challenges in certain epilepsy presentations.
  • Findings suggest the right cingulate gyrus plays a role in the seizure origin or propagation pathway, distinct from the hypothalamic hamartoma.
  • Further research is needed to elucidate the complex relationship between hypothalamic hamartomas and cingulate gyrus involvement in gelastic seizures.