Where does autism spectrum disorder come from?

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Video answer: What does autism spectrum disorder look like across the lifespan?

What does autism spectrum disorder look like across the lifespan?

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Genetics. Several different genes appear to be involved in autism spectrum disorder. For some children, autism spectrum disorder can be associated with a genetic disorder, such as Rett syndrome or fragile X syndrome. For other children, genetic changes (mutations) may increase the risk of autism spectrum disorder.

Scientists do not clearly understand what causes autism spectrum disorder. Several factors probably contribute to autism, including genes a child is born with or environmental factors. A child is at greater risk of autism if there is a family member with autism.

Video answer: What is autism? | autism

What is autism? | autism

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A key fact has come to light within the last couple of years: many autism-causing genetic mutations are “spontaneous.” They occur in the affected child, but in neither parent. Mutations in this category “are not directly inherited from the parents,” explains Assistant Professor Ivan Iossifov , one of several CSHL scientists who has pioneered the study of the role of spontaneous mutations in autism causation.

Autism spectrum disorders (ASD) are a diverse group of conditions. They are characterised by some degree of difficulty with social interaction and communication. Other characteristics are atypical patterns of activities and behaviours, such as difficulty with transition from one activity to another, a focus on details and unusual reactions to sensations.

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.

Several different genes appear to be involved in autism spectrum disorder. For some children, autism spectrum disorder can be associated with a genetic disorder, such as Rett syndrome or fragile X syndrome. For other children, genetic changes (mutations) may increase the risk of autism spectrum disorder.

Kanner first described autism in children in 1943, and coined the term to describe the ‘extreme aloneness’ that he saw as its characteristic. 2 Most authorities now agree on three criteria that are required for a diagnosis of autism. Firstly, an inability to engage in reciprocal social interaction.

The autism spectrum or autistic spectrum encompasses a range of neurodevelopmental conditions, including autism and Asperger syndrome, generally known as autism spectrum disorders or autistic spectrum disorders (ASD).Individuals on the autistic spectrum typically experience difficulties with social communication and interaction and may also exhibit restricted, repetitive patterns of behavior ...

Asperger’s syndrome (also known as Asperger’s Disorder) was first described in the 1940s by Viennese pediatrician Hans Asperger, who observed autism-like behaviors and difficulties with social and communication skills in boys who had normal intelligence and language development.

Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by the following: Difficulties in social communication differences, including verbal and nonverbal communication. Deficits in social interactions. Restricted, repetitive patterns of behavior, interests or activities and sensory problems

Osmosis presents this thorough overview of Autism Spectrum Disorder, or ASD. Review information useful to medical students and medical residents about this c...

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Video answer: How is autism diagnosed? | autism

How is autism diagnosed? | autism