Pervasive Adult Developmental Disorder is a conceptualization I developed in because I found the Diagnostic and Statistical Manual IV categorization system for severe mental illness to be inadequate.

The prevalence of autism spectrum disorder/pervasive developmental disorder is approximately 2 per 1000 children. 20 24 If the occurrences of Duchenne muscular dystrophy (prevalence of 1 in 35,000 ...

Because boys outnumber girls with PDD, relatively little research has focused on girls. Most existing studies have centered on 2 forms of PDD--autism and Rett disorder. The ratio of boys to girls ...

Other PDD disorders include Asperger's Disorder, Childhood Disintegrative Disorder (CDD), Rett's Disorder and PDD-Not Otherwise Specified (PDD-NOS).