One readily noticeable pathognomonic trait of autism is hand-flapping—a stereotyped motor movement that can look a bit like an attempt to accelerating the drying of nail polish. Not all with autism do ...

Add Yahoo as a preferred source to see more of our stories on Google. Westend61 via Getty Images You may have seen videos on social media where people detail the signs that made them realize they’re ...

Add Yahoo as a preferred source to see more of our stories on Google. Internally, many undiagnosed adults with autism say they feel different from those around them. Westend61 via Getty Images You may ...

Autism spectrum disorder is a group of developmental delays that affect how a person communicates and behaves. Many people are diagnosed with autism as young children, but it is possible to recognize ...