Letters Autism spectrum disorder

Autism is not a scientifically valid or clinically useful diagnosis

BMJ 2011; 343 doi: https://doi.org/10.1136/bmj.d5105 (Published 16 August 2011) Cite this as: BMJ 2011;343:d5105
  1. Sami Timimi, consultant child and adolescent psychiatrist1
  1. 1Child and Family Services, Lincolnshire Partnership NHS Foundation Trust, Sleaford NG34 8QA, UK
  1. stimimi{at}talk21.com

Szatmari provides little evidence to support the validity of autism spectrum disorders (ASDs) as a diagnosis.1 Two ex-services users, both diagnosed with an ASD, and I concluded in our recent book that ASD is not a valid diagnosis.2 The prevalence of ASD increased from 4.5 to 160 per 10 000 in just …

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