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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.
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.
Autism was not recognized until the 1980s in China. The estimated prevalence of autism is 11.8 per 10,000 people while the estimated prevalence of autism spectrum conditions is 26.6 per 10,000 people. In Japan, recent estimates of autism spectrum are as high as 13 per 10,000 people. This suggests that autism is more common in Asia than ...
ADHD was found more often in boys, at a rate of 2:1. [10] The most common form of ADHD was inattentive (2.95% of total population), followed by hyperactive/impulsive (2.77%), then combined (2.44%). [10] While differences in prevalence rate were found internationally, it is not clear whether this reflects true differences or changes in ...
Adult ADHD is termed as the diagnosis of ADHD in someone older than 18, as Dr. Kevin Antshel, Ph.D, a licensed psychologist specializing in ADHD and Professor of Psychology at Syracuse University ...
Leo Kanner introduced the concept of autism to many people in the United States and other countries. Leo Kanner was born in 1894 to a Jewish family in what is Ukraine today, and what was then the Austro-Hungarian Empire. He went on to study and work in Berlin. He then immigrated to the United States in 1924. [94] [95]
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For years, experts thought that ADHD affected only boys — bundles of energy who bounce off walls and struggle to pay attention in school, which disrupted their peers and led to poor grades.