ABSTRACT
Childhood absence epilepsy (CAE) is an important kind of epileptic syndrome of genetic generalized epilepsies (GGEs) with prevalence of 5.8/100 000-7.1/100 000. The genetic mechanism of CAE is always the hotspot of research. Susceptibility genes including calcium channel and γ-aminobutyric acid receptor as well as copy number variations (CNVs) have been found. However, those mechanisms cannot explain all the situations since the genetic content of CAE is rather complicated. Nowadays, with new susceptibility genes and genetic mechanisms coming to light, researchers are supposed to study this problem from the point of associated epileptic syndromes. In this review, the genetic features, probable mechanisms of CAE and therapeutic drugs were summarized.
ABSTRACT
Childhood absence epilepsy (CAE) is an important kind of epileptic syndrome of genetic generalized epilepsies (GGEs) with prevalence of 5.8/100 000-7.1/100 000.The genetic mechanism of CAE is always the hotspot of research.Susceptibility genes including calcium channel and γ-aminobutyric acid receptor as well as copy number variations (CNVs) have been found.However,those mechanisms cannot explain all the situations since the genetic content of CAE is rather complicated.Nowadays,with new susceptibility genes and genetic mechanisms coming to light,researchers are supposed to study this problem from the point of associated epileptic syndromes.In this review,the genetic features,probable mechanisms of CAE and therapeutic drugs were summarized.
ABSTRACT
Objective To investigate the characteristics of electroencephalograms ( EEGs ) of patients with childhood absence epilepsy ( CAE ) .Methods EEG of 46 patients with CAE were analyzed .Results Of 46 patients,there were 44 cases (95.6%) with guided bilateral symmetry 3Hz spike-and-wave.16 cases were character-ized by multiple spike-and-wave on the 3Hz spike and slow wave;and the centrotemporal spikes was found in 1 case. Additionally,the 3Hzδactivity in occipital region has been traced in 34 cases of these 46 patients.Conclusion In general,the EEGs of CAE patients have typical characteristics ,and few of them showed atypical manifestation ,which must be verified by clinical attention .
ABSTRACT
La primera descripción de las crisis de ausencias data de 1705. Sin embargo, aún persiste el desconocimiento y la confusión en relación con algunos aspectos conceptuales, de clasificación, terminológicos, diagnósticos, pronósticos y de tratamiento de las diferentes formas de epilepsias con ausencias. El objetivo fundamental de esta publicación es tomar en consideración las denominadas epilepsias generalizadas idiopáticas con ausencias, en los aspectos clínicos y electroencefalográficos. Se realizó una revisión y actualización del tema.
The first description of absence seizures dates back to 1705. However, the lack of knowledge and confusion still persist as regards some aspects of concept, classification, terminology, diagnosis, prognosis and treatment of the different forms of epilepsies with absences. The fundamental purpose of this publication was to take into consideration the so-called idiopathic generalized epilepsies with absences in the clinical and electroencephalographic aspects. The topic was reviewed and updated.
Subject(s)
Humans , Adolescent , Child , Electroencephalography/methods , Epilepsy/classification , Epilepsy/diagnosis , Epilepsy/pathologyABSTRACT
Childhood absence epilepsy (CAE) and benign epilepsy of childhood with centro-temporal spikes (BECT) are common forms of idiopathic epilepsy of childhood onset and share many features such as the marked age dependence of onset. The occurrence of generalized 3 Hz spike and waves in BECT or rolandic spikes in CAE has rarely been reported. We report 2 cases of concomitance of CAE and benign rolandic spikes. All of the two patients were female and had clinically absence seizure only. On EEG the two patients simultaneously showed centro-temporal spikes as well as ictal onset of absence seizure consisting of generalized 3 Hz spike and waves. All of the two patients have become seizure-free with valporic acid. It is rare but not impossible that (Rolandic spikes can concur with CAE rather than as a continuum between CAE and BECT), because all of the two patients have not shown BECT so far.