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  • Title: Childhood epilepsy with occipital paroxysms: difficulties in distinct segregation into either the early-onset or late-onset epilepsy subtypes.
    Author: Genizi J, Zelnik N, Ravid S, Shahar E.
    Journal: J Child Neurol; 2007 May; 22(5):588-92. PubMed ID: 17690066.
    Abstract:
    The Commission on Classification and Terminology of the International League Against Epilepsy Childhood rigidly segregated epilepsy with occipital paroxysms into 2 separate syndromes with different predominant seizure types: early-onset seizure susceptibility type consisting of prolonged infrequent, nocturnal autonomic seizures and accompanied by eye deviation and ictal vomiting and late onset with short diurnal frequent seizures and visual ictal manifestations along with throbbing headaches. Epileptic clinical manifestations and electroencephalographic data were analyzed in 28 patients with suspected occipital lobe epilepsy in an attempt to segregate them into either the early or late forms according to the International League Against Epilepsy classification. Electroencephalography in 25 children demonstrated occipital epileptiform paroxysms compatible with the suspected epileptic syndrome. Only 14 (50%) children complied with the rigid criteria of either early-onset or late-onset presentations. The other 14 (50%) children presented with mixed diverse epileptic phenomena such as short-lived seizures in infancy or prolonged seizures during childhood, not complying with either rigid syndrome (ie, short-lived epileptic blindness at an early age or vomiting during later childhood). Despite present attempts to rigidly segregate childhood epilepsy with occipital paroxysms into 2 distinct epileptic syndromes, a high percentage of children still present with various mixed clinical phenomena. Therefore, clinicians should be aware of possible unique and unusual presentations of occipital lobe epilepsy at various ages.
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