http://psychcentral.com/news/2013/10/18 ... 60851.html
Quote:
Children with attention-deficit hyperactivity disorder (ADHD) often exhibit autistic traits, which can lead to even greater problems with socialization, according to new research presented at the 26th European College of Neuropsychopharmacology (ECNP) Congress.
Previous research has shown that children with autism spectrum disorder (ASD) often also have a diagnosis of ADHD. This new study suggests that the reverse may also be true.
“Twin, family, and linkage studies indicate that [ADHD and ASDs] share a portion of their heritable etiology,” wrote the investigators.
“These findings raise the possibility that some children with ADHD may manifest symptoms of autism even in the absence of a full-fledged disorder,” they add.
The research, which involved 469 children, showed that significantly more of those with ADHD had autistic traits (ATs) compared with children without ADHD. Furthermore, the group with both ADHD and ATs had significantly more psychopathologic, neuropsychological and interpersonal deficits, as well as more emotional dysregulation.