Autism

Autism         Autism is one of the mental, emotional, and behavior distempers that come ons in early childhood. Autism, or autistic disorder, nearly always develops within the first 3 years of a childs life. Children and adolescents with autism outhousenot interact normally with new(prenominal) people. Autism gum olibanum affects umteen aspects of their development.         Children with and adolescents with autism typically: - stool a difficult fourth dimension communicating with others -exhibit very repetitious behaviors (like rocking seat and forth, head banging, or touching or twirling objects); - suck a limited mark of interests and activities; and -may became vacate at a small change in their environs or daily routine.         Although symptoms of autistic disorder both(prenominal)times can be seen in early infancy, the condition can out after months of normal development. In most cases, it is not numerical to ident ify any specific event that triggers autistic disorder. round 7 in every 10 children and adolescents with autistic disorder overly have mental retardation or other problems with their conceiver function or structure.         Recent studies estimate that as many as 14 children out of 10,000 may have autism or a related condition. About 125,000 Americans be moved(p) by these disorders, and nearly 4,000 families across the country have two or more children with autism. Three times as many boys as girls have autism.

        Researchers are still unsure clean about what causes autism. Several studies suggest that autistic disorder exp! onent be caused by a combination of biological factors, including photograph to a virus before birth, a problem with the insubordinate system, or genetics.         Scientists also have set chemicals in the brain and the immune system that may be involved in autistic disorder. As a normal brain develops, the strike of serotonin, a chemical found in the brain, declines. In some children with autistic disorder, however, the serotonin levels do not decline. If you want to allow a full essay, order it on our website: OrderCustomPaper.com

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