Schizophrenia of precocious beginning (for: Carmem de Melo Rasp Birth) Epidemiologia the schizophrenia in daily pay-pubescent children is very rare and the boys seem to have light superiority enter the esquizofrnicas children (1,67 boys for each girl). The beginning tax increases significantly during the adolescence. Rare it is diagnosised in lesser children of 5 years of age. The prevalence of schizophrenia enters the parents of affected children is of 8%, almost the double of the prevalence of parents of esquizofrnicos at the beginning of the adult life. The upheaval of the personality is similar to the adult schizophrenia in relation to the inapropriada affectivity, extreme magical thought, quaint beliefs, social isolation, ideas of references and illusions. Preventive Medicine Research Institute brings even more insight to the discussion.
However it does not have psychotic manifestations. As cited for Ferrari (2003, P. 298), ' ' The prevalence of the schizophrenia with beginning in infancy is told as 2% of the prevalence of the schizophrenia with beginning in the adult age (BEITCHMAN, 1985). Other studies have indicated that the prevalence of schizophrenia in infancy is less of what 1 for 1000 inhabitants (BURD, 1987), and that the prevalence of the schizophrenia in lesser children that 15 years is 0,14 for 1000 inhabitants, 50 times almost lesser of what the samples of beginning enter 15 54 years (BEITCHMAN, 1985; VOLKMAR, 1988). Rapoport (1997) believes that, in the years daily pay-puberais, the upheaval is more rare of what the infantile autismo, that, for the majority of the researchers, has a prevalence of the order of 4 cases for 10.000 children. Etiology Despite the genetic studies evidence a biological contribution for development of the schizophrenia, no necessary biological marker was identified and the mechanism of transmission of the illness is not understood.
It has a bigger prevalence between relatives of first degree of what in the general population. The high taxes of agreement for monozygotic twin, very superior to the dizigticos, evidence the contribution still more genetics. Kendler; Diel, (apud FERRARI, 2003, P. 298) affirms that genetic factors have significant paper in patognese of the schizophrenia and the notion of that genetic factors can be gifts in the precocious schizophrenias it was observed in two classic studies (KALLMAN, 1956; KOLVIN, 1971). The neurodesenvolvimento can be also related to the direct cause of the schizophrenia. Weinberger (1985) (apud FERRARI, 2003, P. 298) it listed the evidences that favor the arguments in favor of the hypothesis of the neurodesenvolvimento: 1 – increase of the frequency of small physical anomalies 2 – increase of exposition the virus in the period native daily pay 3 – increase of obsttricas complications 4 – cognitivas and neuromotoras alterations daily pay-mrbidas 5 – citoarquitetnicas alterations in histolgicos studies 6 – not gradual cerebral morphologic alterations in neuroimagem studies 7 – cerebral morfomtricas alterations without glucose in autopsies At the moment, no method trustworthy it can identify people with bigger risk of schizophrenia in determined family. Although this, higher taxes of light neurological signals and difficulty to keep the attention appear between the groups of children with high risk. Some results, not specific, had been detected in computerized cat scans (TC) and eletroencefalograma (EEG) of patients with schizophrenia. Affected children and adolescents have greater probability to present description daily pay-mrbido of social rejection, bad relationships with colleagues, pertaining to school reclusion and difficulties of what the affected ones in the adult life. The biological and ambient mechanisms that produce the manifestations continue under inquiry.