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Different underlying brain dysfunctions have been hypothesized to result in the common symptoms of autism, just as completely different brain types result in intellectual disability. [1] [5] In recent years, the prevalence and number of people diagnosed with the disorder have increased dramatically. There are many potential reasons for this ...
Autism spectrum disorder [a] (ASD), or simply autism, is a neurodevelopmental disorder characterized by repetitive, restricted, and inflexible patterns of behavior, interests, and activities; deficits in social communication and social interaction; and the presence of high or low sensory sensitivity.
Down syndrome is a genetic condition in which people are born with an extra copy of chromosome 21. This extra copy affects the development of the body and brain, causing a range of physical and mental impairments for the individual. Fragile X syndrome, most frequent among males, is thought to cause autism and intellectual disability.
The scientific study of the causes of developmental disorders involves many theories. Some of the major differences between these theories involves whether environment disrupts normal development, if abnormalities are pre-determined, or if they are products of human evolutionary history which become disorders in modern environments (see evolutionary psychiatry). [5]
The exact cause of autism, including what was formerly known as Asperger syndrome, is not well understood. [5] While it has high heritability, the underlying genetics have not been determined conclusively. [19] [20] Environmental factors are also believed to play a role. [5] Brain imaging has not identified a common underlying condition. [19]
Autism, also called autism spectrum disorder (ASD) or autism spectrum condition (ASC), is a neurodevelopmental disorder characterized by symptoms of deficient reciprocal social communication and the presence of restricted, repetitive, and inflexible patterns of behavior. While its severity and specific manifestations vary widely across the ...
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Wrong Planet – an online community designed for people with autism, people with ADHD, PDDs, and other neurodivergent traits. There are forums and discussions to help neurodivergent people with daily life and the struggles that come with it, such as making friends, general socialization, and tips for going to overwhelming places. [8 ...