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The Difference Between Aspergers and PDD-NOS

Question My 7-year-old son has been diagnosed with ADHD. The pediatrician also thinks that he may have Aspergers or Pervasive developmental disorder not otherwise specified. After researching the two diagnoses, I see that they are very similar. What type of testing can I have done to determine what kind of help my son needs? Answer Like Autism and Aspergers, Pervasive developmental disorder not otherwise specified (PDD-NOS) is one of the five subtypes of the Autism Spectrum Disorders. Children diagnosed with PDD-NOS will have less social impairment than a youngster with Autism or Aspergers. The Autism Spectrum Disorders are: 1. Pervasive developmental disorder not otherwise specified 2. Autism 3. Asperger syndrome 4. Rett syndrome 5. Childhood disintegrative disorder To confuse matters, there is a division among therapists on the use of the term Pervasive Developmental Disorder (PDD), which is the same thing as Autism Spectrum Disorder (ASD). Many use the term PDD as a