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Refractory Temporal Gelastic Seizure: A Case Report
A F Okafor1, C L Nwosu1, R I Chidomere1
1Department of Paediatrics, Federal Medical Centre, Umuahia.
Summary
Gelastic seizures, characterized by laughter, can originate from the temporal lobe, not just the hypothalamus. This case study shows lamotrigine may effectively treat these rare epilepsy events.
Area of Science:
- Neurology
- Epileptology
Background:
- Gelastic seizures are rare epileptic events often linked to hypothalamic hamartomas.
- These seizures can also arise from cortical epileptogenic foci, presenting diagnostic challenges.
Purpose of the Study:
- To report a case of gelastic seizures originating from the temporal lobe in a child.
- To highlight diagnostic and therapeutic considerations for this rare presentation.
Main Methods:
- Case report of an eight-year-old boy with a two-year history of hypermotor seizures and inappropriate laughter.
- Video electroencephalography (EEG) and 1.5 Tesla brain magnetic resonance imaging (MRI) were utilized.
- Pharmacological treatment trials including carbamazepine, levetiracetam, and lamotrigine were assessed.
Main Results:
- Video EEG indicated left temporal lobe epilepsy with mild diffuse encephalopathy.
- MRI revealed no structural abnormalities, specifically no hypothalamic hamartoma.
- Seizures were poorly controlled with carbamazepine and levetiracetam but improved with lamotrigine.
Conclusions:
- Gelastic seizures can originate from the temporal lobe without hypothalamic hamartoma.
- These seizures may be resistant to first-line antiepileptic drug therapies.
- Early recognition and optimized treatment strategies are crucial for managing such rare epilepsy cases.
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