Yes pervasive developmental disorder genetic. Try to keep away from it it is a very bad disorder.

Developmental needs are something which we grow up with. For example, a young child may be diagnosed with Autism from an early age. This is a developmental disorder as the child developes through life with this disorder. As the child gets older, the disorder may get worse. Some developmental needs may be needed for that child to live a happy life with the disorder.

A developmental delay refers to a child not meeting typical milestones within an expected timeframe, whereas a developmental deficit or disorder typically implies a more permanent impairment in functioning. A delay may catch up over time with appropriate interventions, while a deficit or disorder may require ongoing support or therapy.

PDD is an acronym for pervasive developmental disability, which is a description of a type of developmental disorder. It means the same as autism spectrum disorder. It encompasses five conditions: autism, Asperger's Syndrome, Rett Syndrome, childhood disintegrative disorder, and PDD-Not Otherwise Specified. See the related question below "What are autism spectrum disorders?" for more details.

ADHD is classified as a neurobehavioral developmental disorder.