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Overall, they found that females diagnosed with autism or another neurodevelopmental disorder had a greater number of harmful mutations throughout the genome than did males with the same disorders. [20] Women with an extra X chromosome, 47,XXX or triple X syndrome, have autism-like social impairments in 32% of cases. [21]
According to the CDC, in 2023, 1 in 36 8-year olds were found to be diagnosed with ASD while in 2018, only 1 in 44 8-year olds were found to be diagnosed with ASD. [37] Studies also show that boys are more likely to be diagnosed with ASD than girls despite there being no difference between the two in symptoms and overall expression. [38]
The epidemiology of autism is the study of the incidence and distribution of autism spectrum disorders (ASD). A 2022 systematic review of global prevalence of autism spectrum disorders found a median prevalence of 1% in children in studies published from 2012 to 2021, with a trend of increasing prevalence over time.
In 2002, 1 in every 150 eight-year-old children received an ASD diagnosis. In 2020, the figure was 1 in every 36, according to the CDC.
[9] [10] The number of people diagnosed has increased considerably since the 1990s, which may be partly due to increased recognition of the condition. [38] While rates of ASD are consistent across cultures, they vary greatly by gender, with boys diagnosed far more frequently than girls: 1 in 70 boys, but only 1 in 315 girls at eight years of ...
The number of children on the autism spectrum has increased dramatically since the 1980s, at least partly due to changes in diagnostic practice; it is unclear whether prevalence has actually increased; [3] and as-yet-unidentified environmental risk factors cannot be ruled out. [4]
Story at a glance People on the autism spectrum may also have varying co-occurring disorders and psychiatric conditions. An analysis of more than 4,600 autistic adults finds differences in the ...
There are many conditions comorbid to autism, such as attention deficit hyperactivity disorder, anxiety disorders, and epilepsy. In medicine, comorbidity is the presence of one or more additional conditions co-occurring with the primary one, or the effect of such additional disorders.