![]() Less than 10% of children develop infrequent generalized tonic-clonic seizures, and it is rare for them to continue having absence seizures. ![]() In childhood absence epilepsy, in which typical absence seizures are the only type of seizures affecting the child, seizures generally cease spontaneously by 12 years of age or sooner. Typical absence seizures should not be confused with atypical absence seizures, which differ markedly in EEG findings and ictal behavior, and are usually present with other seizure types in a child with a background of learning disability and severe epilepsy. However, the abrupt ending of typical absence seizures, without a postictal phase, is the most useful clinical feature in distinguishing the two types. Typical absence seizures are often confused with complex partial seizures, especially in cases of prolonged seizure with automatisms. Typical absence seizures display a characteristic EEG showing regular symmetrical generalized spike and wave complexes with a frequency of 3 Hz, and usually occur in children with normal development and intelligence. Interventions for atypical absence seizures or for absence seizures secondary to structural lesions are not included in this review. atypical seizures is important, as the natural history and response to treatment vary between the two groups. Absence seizures are sudden, frequent episodes of unconsciousness lasting a few seconds, and they are often accompanied by simple automatisms or clonic, atonic, or autonomic components. ![]()
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