Pervasive developmental disorders, PDD’s, are a group of recognized syndromes which are evident in childhood. PDD’s include Asperger’s syndrome, autism, Rhett’s disorder and others. These disorders are difficult to diagnose but the effects are seen in young children who have difficulty with social situations, communication and often develop repetitive behaviors around specific interests or triggers. The symptoms will often be noted by parents, teachers or other caregivers. Diagnosis usually involves specific psychological testing. A child with PDD will need accommodations at school and extra social support. Therapy is helpful in teaching the child specific skills, helping the family understand how to respond to symptoms, and learning to advocate for needed understanding and support.