Machado RA, Astencio AG. Gelastic seizures involving the
left parietal lobe. Epilepsy Behav. 2012;23(1):87‐89.
doi:10.1016/j.yebeh.2011.11.009
Abstract
Gelastic seizures have been described in various epilepsies
arising from the temporal or frontal lobes, although the most commonly
encountered form is related to the presence of a hypothalamic hamartoma. We
describe a patient with gelastic seizures involving the left parietal lobe. Our
patient, an 8-year-old girl, underwent interictal video/EEG monitoring and MRI.
The seizures consisted of brief staring followed by smiling and laughing.
Electroencephalography during the gelastic seizures showed rhythmic spikes and
waves in the left parietal lobe. MRI revealed the characteristic features of
focal cortical dysplasia. Our findings suggest that the left parietal lobe may
actively participate in the particular epileptogenic network generating
gelastic seizures.
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