Autism spectrum disorder can start in childhood and later causes problems interacting in society, socially, at work and in school, including academic performance. Usually children first display symptoms of autism in the early years. A very small percentage of children seem to develop normally from birth, and then experience a prolonged period of regression, usually between eighteen and twenty-four months of age, when they gradually develop verbal language, socialization, emotional development and learn more complex routines. The rest of the children suffer either some autistic characteristics or they have classic…
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