Mental Retardation in Epileptic Children-A Neuroepidemiologic Study
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概要
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Mental retardation in childhood epilepsy is a major medical and social problem. However, reliable data concerning the epidemiology of mental retardation in epileptic children are scarecely found. A neuroepidemiological investigation was performed in Okayama Prefecture, Japan, on December 31, 1975 as the prevalence day. Out of all 289, 650 child population under 10 years of age, 2, 378 epileptic children were identified. Combined mental retardation was also studied among these epileptic children.<BR>Results:<BR>1) On the prevalence day, mental retardation, namely less than 75 of IQ or DQ, was noted in 410 epileptic children which consisted 17.2% of all identified epileptic cases. The prevalence rate was 1.4 per 1, 000.<BR>2) Regarding the incidence of mental retardation in relation to seizure type, mental retardation was frequently noted among the cases with Lennox syndrome, West syndrome and myoclonic seizure, i.e. 90.6%, 68.3% and 42.1%, respectively.<BR>On the other hand it was rarely noted in petit mal absence and autonomic seizure, i.e. 0% and 5.1%, respectively.<BR>3) The epileptics with their onset of seizures within the first six months of life showed high association of mental retardation.<BR>4) In relation to the presumed etiology of epilepsy, mental retardation was frequently noted among the cases with vascular disorders, encephalitis, neonatal asphyxia and premature birth, i.e. 100%, 66.7%, 31.5%, and 29.4%, respectively.<BR>On the other hand, it was less frequently noted in the cases with associated immunization, predisposition to convulsions or epilepsy, head trauma and unknown causative factor, i. e. 0%, 6.5%, 15.8%, and 17.1%, respectively.
- 一般社団法人 日本てんかん学会の論文
一般社団法人 日本てんかん学会 | 論文
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