WASHINGTON -- For many experts, Health Secretary Robert F. Kennedy Jr. ’s promise for “pulling back the curtain” to find autism's causes in a few months is jarring — and unrealistic.

The expansion of the concept of the autism spectrum and the consequent ... The term pervasive developmental disorder – not otherwise specified (PDD-NOS) as defined in the DSM-IV-TR is used ...

Getting a timely diagnosis of autism spectrum disorder is a major challenge, but new research shows that how young adults, and potentially children, grasp objects could offer a simpler way to diagnose ...

and pervasive developmental disorder-not otherwise specified (PDD-NOS)—into a single diagnosis: Autism Spectrum Disorder. The DSM-5 also introduced new criteria for diagnosing autism that ...