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The purpose of this study is to analyse the delay between age at first symptoms and age at diagnosis as well as the characteristics of the first symptoms for the different subcategories of pervasive developmental disorders. The sample consists of 601 children with a diagnosis of a pervasive developmental disorder. Age at first symptoms, age at diagnosis and the type of the first problems are registered. The results show that children with autism show first symptoms at a mean age of 15 months whereas diagnosis is made at a mean age of 76 months. Children with Asperger\u2019s syndrome show first symptoms at a mean age of 26 months, while diagnosis is made at the mean age of 110 months. There is still a large delay between the age at which parents first report first symptoms and age at diagnosis. To improve early detection, systematic screening and training of primary care paediatricians should be implemented.<\/jats:p>","DOI":"10.1177\/1362361310371951","type":"journal-article","created":{"date-parts":[[2010,10,5]],"date-time":"2010-10-05T20:54:01Z","timestamp":1286312041000},"page":"575-588","source":"Crossref","is-referenced-by-count":30,"title":["Early symptoms and recognition of pervasive developmental disorders in Germany"],"prefix":"10.1177","volume":"14","author":[{"given":"Michele","family":"Noterdaeme","sequence":"first","affiliation":[{"name":"Josefinum, Department of Child and Adolescent Psychiatry and Psychotherapy, Augsburg, Germany,"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna","family":"Hutzelmeyer-Nickels","sequence":"additional","affiliation":[{"name":"Heckscher Klinikum, M\u00fcnich, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2010,10,5]]},"reference":[{"key":"atypb1","doi-asserted-by":"publisher","DOI":"10.1097\/00004583-200006000-00007"},{"key":"atypb2","doi-asserted-by":"publisher","DOI":"10.1023\/A:1023080005650"},{"key":"atypb3","doi-asserted-by":"publisher","DOI":"10.1192\/bjp.161.6.839"},{"key":"atypb4","volume-title":"ADI-R Diagnostisches Interview f\u00fcr Autismus-Revidiert (ADI-R Autism Diagnostic Interview Revised)","author":"B\u00f6lte, S.","year":"2006"},{"key":"atypb5","doi-asserted-by":"publisher","DOI":"10.1177\/1362361308094500"},{"key":"atypb6","doi-asserted-by":"publisher","DOI":"10.1007\/s10803-006-0328-2"},{"key":"atypb7","doi-asserted-by":"publisher","DOI":"10.1176\/appi.ajp.162.6.1133"},{"key":"atypb8","doi-asserted-by":"publisher","DOI":"10.1097\/00001163-200407000-00007"},{"key":"atypb9","doi-asserted-by":"publisher","DOI":"10.1017\/S0954579408000370"},{"key":"atypb10","doi-asserted-by":"publisher","DOI":"10.1007\/s007870050058"},{"key":"atypb11","doi-asserted-by":"publisher","DOI":"10.1097\/CHI.0b013e31819e40c0"},{"key":"atypb12","doi-asserted-by":"publisher","DOI":"10.1007\/s10803-005-0053-2"},{"key":"atypb13","doi-asserted-by":"publisher","DOI":"10.1017\/S0012162299001656"},{"key":"atypb14","doi-asserted-by":"publisher","DOI":"10.1352\/2009.114:23-41"},{"key":"atypb15","doi-asserted-by":"publisher","DOI":"10.1007\/s10803-006-0333-5"},{"key":"atypb16","doi-asserted-by":"publisher","DOI":"10.1023\/A:1005592401947"},{"key":"atypb17","doi-asserted-by":"publisher","DOI":"10.1007\/BF02172145"},{"key":"atypb18","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2005-0185"},{"key":"atypb19","doi-asserted-by":"publisher","DOI":"10.2105\/AJPH.2007.131243"},{"key":"atypb20","doi-asserted-by":"publisher","DOI":"10.2378\/fi2010.art02d"},{"key":"atypb21","doi-asserted-by":"publisher","DOI":"10.1024\/1422-4917\/a000046"},{"key":"atypb22","doi-asserted-by":"publisher","DOI":"10.1024\/1422-4917\/a000045"},{"key":"atypb23","doi-asserted-by":"publisher","DOI":"10.1177\/1362361308094503"},{"key":"atypb24","doi-asserted-by":"publisher","DOI":"10.1023\/A:1010738829569"},{"key":"atypb25","volume-title":"Diagnostische Beobachtungsskala f\u00fcr Autistische St\u00f6rungen (ADOS) (Autism Diagnostic Observation Schedule)","author":"R\u00fchl, D.","year":"2004"},{"key":"atypb26","doi-asserted-by":"publisher","DOI":"10.1097\/CHI.0b013e31819b3848"},{"key":"atypb27","doi-asserted-by":"publisher","DOI":"10.1007\/s10803-007-0532-8"},{"key":"atypb28","volume-title":"Internationale Klassifikation psychischer St\u00f6rungen, ICD 10 Kapitel V. 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