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Classic autism, also known as childhood autism, autistic disorder, or Kanner's syndrome, is a formerly diagnosed neurodevelopmental disorder first described by Leo Kanner in 1943. It is characterized by atypical and impaired development in social interaction and communication as well as restricted, repetitive behaviors, activities, and interests.
Autism spectrum disorder [a] (ASD), or simply autism, is a neurodevelopmental disorder "characterized by persistent deficits in social communication and social interaction across multiple contexts" and "restricted, repetitive patterns of behavior, interests, or activities". [11] Sensory abnormalities are also included in the diagnostic manuals ...
Many people still use Asperger's as a term when referring to "high-functioning" individuals with autism, but it is not an official diagnosis. Childhood disintegrative disorder (CDD) – a condition in which a child experiences developmental regression. Classic autism - (or Kanner's syndrome) the first described form of autism written about in 1943
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The Japanese practice is to screen all children for ASD at 18 and 24 months, using autism-specific formal screening tests. [28] In contrast, in the UK, children whose families or doctors recognize possible signs of autism are screened. It is not known which approach is more effective.
Autism Spectrum Disorder is a developmental disability that stems from differences in the brain. According to the Centers for Disease Control and Prevention (CDC), known causes are often genetic ...
The term "high-functioning autism" was used in a manner similar to Asperger syndrome, another outdated classification.The defining characteristic recognized by psychologists was a significant delay in the development of early speech and language skills, before the age of three years. [12]
Autism is associated with several genetic disorders, [4] perhaps due to an overlap in genetic causes. [5] About 10–15% of autism cases have an identifiable Mendelian (single-gene) condition, chromosome abnormality, or other genetic syndrome, [6] a category referred to as syndromic autism.