A 3-year follow-up study of 2-6 years children with diagnosis of pervasive developmental disorder

Objective:To investigate the short term prognosis and intervention of children with pervasive developmental disorder(PDD).Methods: The 29 children who were diagnosed as PDD in 2004 were diagnosed again after(38.07±0.87) months according to the Diagnostic and Statistical Manual of Mental Disorders,Fourth Edition(DSM-IV) and assessed with Childhood Autism Rating Scale,Gesell Developmental Schedule or Chinese-Wechsler Intelligence Scale for Children,Achenbach Child Behavior Checklist,Sensory Integrative Schedule,the self-made general condition questionnaire and questionnaire for psychiatric children.Results: Totally 26 children with PDD were followed up.Among them,4(15.4%) cases got much improvement,4(15.4%) got improvement,15(57.7%) got no improvement,2(7.7%) got worse.Twenty-one(80.8%) children had the same diagnosis with 2004,1 child' s diagnosis changed from autism to atypical autism,2 children with autism and 2 children with atypical autism in 2004 did not meet with diagnosis of PDD at follow up.The rehabititation intervention to these children was little.The education arrangement for these children was limited.The percentage of children comorbid with mental retardation,sensory disintegration,hyperactivity,limb disability and epilepsy in children diagnosed as PDD at follow up were separately 90.9%,76.2%,52.4%,18.2% and 18.2%.Conclusion: It suggests that most of children with PDD have poor short term prognosis,and only small part of children with PDD have relatively good prognosis.