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Arquivos de Neuro-Psiquiatria

Print version ISSN 0004-282X

Abstract

FONSECA, Lineu Corrêa  and  TEDRUS, Glória M.A.S.. Occipital epileptiform activity with or without blocking by eyes opening: a comparative clinical and electroencephalographic study. Arq. Neuro-Psiquiatr. [online]. 1995, vol.53, n.4, pp.724-729. ISSN 0004-282X.  https://doi.org/10.1590/S0004-282X1995000500002.

Occipital epileptiform activity blocked by eyes opening (OEAB) is primarily observed in childhood epilepsy with occipital paroxysms but may be also found in cases of benign childhood epilepsy with centrotemporal spikes, cryptogenic/symptomatic partial epilepsies, idiopathic generalized epilepsies and in patients with no seizures. We studied comparatively EEG and clinical features of 20 patients with OEAB and 120 patients with occipital epileptiform activity not suppressed by eyes opening (OEA). Epileptiform activity (OEA or OEAB) was registered until the 7 years of age in 67.5% of the patients with OEA and in 45% of the patients with OEAB. Epileptic seizures began before 4 years of age in 44.4% of the cases with OEA and in 14.2% in the group OEAB. Febrile convulsions alone occurred only in the OEA group (12.5%). Developmental retardation was referred in 27 patients with OEP. The occurrence of spike and wave complexes was statistically more frequent among patients with OEAB (80.0%) as opposed to patients with OEA (17.5%), Our findings suggest clinical and electroencephalographic differences between children with OEA and OEAB.

Keywords : focal epilepsy; EEG; childhood; epileptiform activity.

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