Abstract
We investigated the incidence rates of several neurological diseases in childhood in a suburban Tokyo area with a total population of about 130,000. The number of liveborn babies during 1985-1989 was 6,772. The number of patients with cerebral palsy (CP) was 13 and the incidence rate was 1.9/1,000, which is equal to the results of reports from several countries. Patients with severe mental and motor retardation (SMMR) was 7 and the incidence rate was 1.0/1,000. Five out of the 7 children with SMMR always needed medical care and were always or very frequently hospitalized. Prenatal brain damage played a major role in the pathogenesis of CP and SMMR. The number of patients with Down syndrome (DS) was 9 and the incidence rate was 1.3/1,000. The number of patients with mental retardation (MR) except DS was 64 and the incidence rate was 11.6/1,000. We conclude that the incidence rates of CP, DS, SMMR, and MR still remain high and that we need further strategy to prevent pediatric neurological diseases.
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