The Childhood Disintegrative Disorder differentiates itself from all the other disorders in regards to the time and age in which its symptoms and effects can be noticed in an individual. This disorder can be devastating to a parent of a diagnosed child. Children with CDD usually show normal development for the first few years of their life, but then they lose many of the skills they had developed, including social skills, cognitive skills, motor skills, and toilet training. Children with CDD also exhibit multiple symptoms that are common to those mentioned under the Autistic Disorder (AD), and just like AD, CDD is more prevalent in males than females. However, CDD frequently has more severe symptoms than AD (often including mental retardation and seizures). ).  Less is known about this disorder than about the other PDDs largely because of its rarity.

 

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 [O’brien, Marion, and Daggett, Julie A. Beyond the Autism Diagnosis. Baltimore: Paul H. Brookes, 2006. pp. 18]