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[Idiopathic epilepsy with generalized seizures in early childhood]
1Kinderneurologisches Zentrum, Kliniken der Landeshauptstadt, Düsseldorf.
Insights
Idiopathic generalized epilepsies in early childhood have a genetic basis and present with various seizure types. Early onset and developmental issues indicate a less favorable prognosis for childhood epilepsy.
Area of Science:
- Pediatric Neurology
- Clinical Genetics
Context:
- Idiopathic generalized epilepsies manifest in early childhood (1-5 years), with a higher incidence in boys.
- Seizure types include myoclonic, atonic-astatic, myoclonic-astatic, absences, and tonic-clonic seizures, often in combination.
Purpose:
- To outline the diagnostic and therapeutic considerations for idiopathic generalized epilepsies in early childhood.
- To differentiate these epilepsies from multifocal epilepsies like infantile spasms and Lennox-Gastaut syndrome.
Summary:
- Genetic predisposition underlies these epilepsies, presenting with diverse seizure types and onset between ages one and five.
- Valproate is the primary treatment, with adjunctive therapies like ethosuximide, kaliumbromide, or phenobarbital based on seizure type.
- Prognosis is poorer with early onset (first year), prolonged seizures, and pre-existing developmental disturbances.
Impact:
- Highlights the importance of accurate diagnosis for appropriate treatment selection.
- Informs clinical management strategies for improved outcomes in childhood epilepsy.
- Emphasizes the role of genetic factors and early-life events in epilepsy development and prognosis.
Abstract:
Idiopathic epilepsies with generalized seizures of early childhood are based on a genetic predisposition. The onset takes place between the first and fifth years of age, boys are affected more often than girls. Dependent on the clinical symptomatology you have to distinguish: myoclonic seizures; atonic-astatic seizures; myoclonic-astatic seizures; absences; tonic-clonic seizures. In more than half of the cases a combination of these seizures can be observed. The differentiation of epilepsies with generalized seizures of multifocal origin (infantile spasms, Lennox-Gastaut syndrome and Pseudo-Lennox syndrome [atypical benign epilepsy]) may be difficult but is essential. Therapy of choice is valproate, often in combination with ethosuximide (in children with minor seizures) or with kaliumbromide or phenobarbital (in children with tonic-clonic seizures). Generally the prognosis is more unfavourable if epilepsy starts in the first year of life with afebrile and febrile generalized tonic-clonic or clonic seizures, if children are suffering from longlasting states of seizures and if development is disturbed before beginning of epilepsy.