A Study of Atypical Benign Partial Epilepsy of Childhood (ABPE) by Means of Long Term EEG Recording.

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A well-developed boy developed partial seizures in the right corner of the mouth atthe age of 3 years 1 month, followed by atypical absences at the age of 3 years 7 months. Status epilepticus of atypical absences with blinking and atonic seizures ofthe upper limb and trunk appeared from the age of 3 years 10 months. EEG showeddiffuse sharp-and-slow wave complexes that were maximal in the left C-P-mT-pTarea. Ambulatory EEG recordings were performed for 21.5 hours when he was 4 years 0 month old. Diffuse sharp-and-slow wave complexes appeared in short runs duringwakefulness, and continuously on falling asleep. The occurrence rate of continuoussharp-and-slow wave complexes was 40% during all NREM sleep. Diffuse sharp-and-slow wave complexes were also observed in short runs during REM sleep, anddecreased at awakening in the morning. Percentage of sleep period time for REMsleep was 21% during nocturnal sleep. Prognosis of seizures and mental status wasgood. We diagnosed his disease as ABPE based on the clinical course and the EEGfindings, and discussed the differences from epilepsy with continuous spike-wavesduring slow wave sleep and Lennox-Gastaut syndrome.
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