Yes. According to the Down Syndrome Resource Foundation, autism is 10-25 times more common among the people with down’s syndrome than others.
Research states that there is an increase in the population of children living with down’s syndrome to be diagnosed with autism or autistic spectrum disorder. These children are referred to as having a ‘dual diagnosis’, i.e., two co-existing conditions (down syndrome and autism). Such children are at more disadvantage in regards to their education and overall development even relative to children who do not have dual diagnosis.
However, it is difficult to diagnose autistic spectrum disorder in children with down’s syndrome who have already have a learning disability. Furthermore, there is a lack of clear agreement about the numbers of children with down’s syndrome who also have autism or some features of autism.
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