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  • Title: A study of 63 cases with eyelid myoclonia with or without absences: type of seizure or an epileptic syndrome?
    Author: Caraballo RH, Fontana E, Darra F, Chacon S, Ross N, Fiorini E, Fejerman N, Dalla Bernardina B.
    Journal: Seizure; 2009 Jul; 18(6):440-5. PubMed ID: 19419888.
    Abstract:
    PURPOSE: Eyelid myoclonia and absences (EMA) induced by eye closure associated with brief, fast, and generalized paroxysms of polyspikes and waves was considered as an epileptic syndrome and a type of seizure as well. We analyzed the electroclinical features and evolution of EMA, and tried to determine if it represents a well-defined epileptic syndrome or a non-specific condition associated to other epilepsies. METHODS: Between June 1994 and June 2005, 63 patients who met diagnostic criteria of EMA were enrolled in the study and have been followed up to the present time. RESULTS: Two main groups could be identified. The first group was divided into two subgroups. One subgroup of 28 patients presented EMA associated with infrequent generalized tonic-clonic seizures (GTCS), and the other 1 of 9 patients presented early-onset EMA refractory to antiepileptic drugs (AEDs), associated or not with GTCS and mental retardation. Four of them had self-induced seizures. The second group included 26 patients with EMA associated with GTCS and/or massive myoclonias, or GTCS induced by intermittent photic stimulation. All these patients had electroclinical features compatible with idiopathic generalized epilepsies. CONCLUSION: In the first group, EMA should be considered as a photosensitive idiopathic epileptic syndrome. A subgroup of early-onset of EMA refractory to AEDs, associated or not with GTCS and mental retardation should also be considered as a variant or a distinct photosensitive idiopathic epileptic syndrome. Finally, in the second group EMA may correspond to a type of seizures in idiopathic generalized epilepsies.
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