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Autism spectrum disorder (ASD) or simply autism is a neurodevelopmental disorder that begins in early childhood, persists throughout adulthood, and is characterized by difficulties in social communication and restricted, repetitive patterns of behavior. [1]
The World Health Organization estimates about 1 in 100 children had autism during the period from 2012 to 2021 as that was the average estimate in studies published during that period with a trend of increasing prevalence over time. However, the study's 1% figure may reflect an underestimate of prevalence in low-and middle-income countries.
Mind-blindness is defined as a state where the ToM has not been developed in an individual. [1] According to the theory, non-autistic people can make automatic interpretations of events taking into consideration the mental states of people, their desires, and beliefs.
Other terms used to describe regression in children with autism are autism with regression, autistic regression, setback-type autism, and acquired autistic syndrome. [16] Within the regressive autism developmental course, there are two patterns. The first pattern is when developmental losses occur in the first 15 months to 3 years.
It was found that autism is commonly diagnosed in children where the corpus callosum does not fully develop (45% of children with agenesis of the corpus callosum). [46] A further example of brain structures relating to ASD is that children with ASD tend to have a larger amygdala , [ 47 ] this is another example of being an extreme version of ...
Autism refers to a variety of conditions typically identified by challenges with initiating and sustaining two-way social communication, and restricted or repetitive behavior unusual for the individual's age or situation. [1] Although linked with early childhood, the symptoms can appear later as well.
The term "high-functioning autism" was used in a manner similar to Asperger syndrome, another outdated classification.The defining characteristic recognized by psychologists was a significant delay in the development of early speech and language skills, before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]
Early studies showed evidence that there may be an interhemispheric transfer deficit among people with alexithymia; that is, the emotional information from the right hemisphere of the brain is not being properly transferred to the language regions in the left hemisphere, as can be caused by a decreased corpus callosum, often present in ...