الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
Developmental pediatrics is concerned with the diagnosis and supervision of child development. It involves the medical and social aspects of medicine. Behaviour disturbances consti tute a good part of clinical practice. The aim of this work was to study the developmental patterns among preschool children and to study the environmental influences that affect child development. The study was conducted on 362 preschool child from the nurseries of Alexandria. Data were collected by: Preschool behaviour questionnaire to screen behaviour disorders. Social questionnaires were constructed to collect data about social, family and environmental biologic factors influencing child developement. Complete clinical examinations: complete thorough clinical examination including neurologic assessment, anthropometric measurements as well as the emotional state of the child. Denver Developmental screening test was done for some children to assess their developmental state analysis of the collected data revealed the following results: Behaviour disturbances were found in 22.93 of pre school children in the studied sample. 174. Prenatal life: Children who had regular prenatal care had less behaviour disturbances. Behaviour disturbances were higher among children of mothers who took medication during their pregnancy although the difference was not significant. Behaviour disturbances were significantly higher among children of mothers who had hyperemesis. Behaviour disturbances were higher among children born in hospitals, the least percent of behaviour distur bances were among children delivered by Caesarian section and the highest by ventouse delivery. However the diffe rences were not statistically significant. Life after birth: Behaviour disturbances were higher among boys. They were also higher in children below 4 years. They were also higher among underweighted children. However, the difference was not significant. Behaviour disorders occured more among children who received resuscitation or were cyanosed at birth, they were also higher in children with history of jaun dice. But the results were not significant. Behaviour disturbances were higher among artifi cially fed children, but the difference was not signi ficant. Behaviour disturbances were significantly lower in immunized children. There was no significant difference in behaviour disturbances between children with a pi story of acute illnesses and other children. Behaviour disturbances were higher among children with history of seizures but the difference was not statistically significant. Behaviour disturbances were significantly lower among asthmatic children. Behaviour disturbances were significantly high among children with positive soft signs as dysdiadochoki nesia, dysgraphia. Developmental features: Behaviour disturbances occurs more among children with developmental lag according to the Denver test. \ Behaviour disturbances were significantly higher among children who had delay in personal social, language, gross motor fields. Although they were higher in the fine motor field but the difference was not statistically significant. Behaviour disturbances were significantly higher among children with abnormal speech and articulation. Social features: Behaviour disturbances occured more among first born children but the difference was not significant. 176. Behaviour disturbances were significantly higher among twins. Behaviour d~sorders were significantly higher among emotionally disturbed children. Family features: Behaviour disturbances were higher among children born to mothers below 25 years. There was not trend in relation to the education or occupation of the parents. Behaviour disturbances were higher among first cousins con sanguinous descendants. I rence was not significant. However, the diffe Behaviour disturbances were least among children with 2~ years interpregnancy interval between them and their previous siblings. Behaviour disturbances were higher in large sized families. Behaviour disturbances were significantly higher among in children living in shar.ed overcrowded houses. Behaviour disturbances were significantly higher in children in families with low percapita income per month. The following recommendations were suggested: A training programme for health personnel in the field of child development. Establishment of developmental clinics. Encourage the mothers to breast feed their infants. And to take mother leave for the first 2 years of their children lives. Screening all preschool children for their intellectual capacities and developmental level.