Where can I get more information? What is autism spectrum disorder? Autism spectrum disorder ASD refers to a group of complex neurodevelopment disorders characterized by repetitive and characteristic patterns of behavior and difficulties with social communication and interaction. The symptoms are present from early childhood and affect daily functioning.
Brain scans show differences in the shape and structure of the brain in children with autism compared to in neurotypical children. Researchers do not know the exact cause of autism but are investigating a number of theories, including the links among heredity, genetics and medical problems.
In many families, there appears to be a pattern of autism or related disabilitiesfurther supporting the theory that the disorder has a genetic basis.
While no one gene has been identified as causing autism, researchers are searching for irregular segments of genetic code that children with autism may have inherited. Other researchers are investigating the possibility that under certain conditions, a cluster of unstable genes may interfere with brain development, resulting in autism.
Still other researchers are investigating problems during pregnancy or delivery as well as environmental factors such as viral infections, metabolic imbalances and exposure to chemicals.
Genetic Vulnerability Autism tends to occur more frequently than expected among individuals who have certain medical conditionsincluding fragile X syndrome, tuberous sclerosis, congenital rubella syndrome and untreated phenylketonuria PKU.
Some harmful substances ingested during pregnancy also have been associated with an increased risk of autism.
July 15, Share:Autism Spectrum Disorders are believed to be a biologically based neurodevelopmental disability with a genetic basis. Research scientists recognize that a number of problems may interfere with normal brain development and that problems with the communication network interfere with the overall task of coordinating sensory information, thoughts, feelings and actions.
Aug 25, · Autism spectrum disorder (ASD) is a developmental disorder that affects communication and behavior. Although autism can be diagnosed at any age, it is said to be a “developmental disorder” because symptoms generally appear in the first two years of life.
Difficulty with communication and. Autism Spectrum Disorders All around the world, there are many children and adults that suffer from an autism spectrum disorder.
Unluckily, autism is a disorder that is .
Introduction: Social motivation and social cognition, two competing accounts of autism. Over the last three decades, a number of theories have been put forward to account for the pervasive social impairments found in Autism Spectrum Disorders (ASD).
Key Words Autism spectrum disorder, Aspergers syndrome, youth, adults, activity groups, parent supports, interventions, social integration. Introduction When writing about the children with a disorder later named for him, Hans Asperger stated: “the nature of these children is revealed most clearly in their behaviour towards other people.
Key Words Autism spectrum disorder, Aspergers syndrome, youth, adults, activity groups, parent supports, interventions, social integration.
Introduction When writing about the children with a disorder later named for him, Hans Asperger stated: “the nature of these children is revealed most clearly in their behaviour towards other people.