Dr. Michael Alessandri answers the question: 'PDD vs. Autism Spectrum Disorder?' Oct. 23, 2008 -- Question: Is a pervasive developmental disorder the same as an autism spectrum disorder? Answer: A ...

New research identifies four presentations of autism based on genetics, behaviors and the ages when symptoms first appeared.

Autism has long been known as a spectrum, signifying a wide range of symptoms and severity. Now, new research suggests that ...

In the present study, distantly related individuals with childhood autism and related pervasive developmental disorders (PDDs) from the Faroe Islands were genotyped for polymorphic markers distributed ...

Is there a way to eliminate the confusion between autism and pervasive developmental disorder not otherwise specified (PDD-NOS)? It is often more difficult to obtain services for children in ...

Today’s statistics point to between two and six people in 1,000 being diagnosed with a PDD. This is about .4 percent of the population. To get a rough idea of how broad spread this is, you might like ...

- Does your child avoid eye contact, have little or no interest in making new friends or prefer solitary activities to social games? These may be signs that your child has an autism spectrum disorder.

Autistic adults show reduced availability of a key glutamate receptor, mGlu5, across widespread brain regions.

Is there a way to eliminate the confusion between autism and pervasive developmental disorder not otherwise specified (PDD-NOS)? It is often more difficult to obtain services for children in ...