Reaching a diagnostic decision is seldom straightforward and particularly not when a child or adult presents with symptoms that greatly overlap, like they do with ADHD and Autism Spectrum Disorder (ASD). In these cases, it is not uncommon that a clinician decides that only one of the conditions explains the symptoms, yet with the release of the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) in 2013, reaching a dual diagnosis is possible.
Clinical and genetic studies additionally suggest that ADHD and ASD not only often co-occur but also share genetic susceptibility and data from the 2014 National Survey of the Diagnosis and Treatment of ADHD and Tourette Syndrome (n = 2,464) showed that approximately one in eight children currently diagnosed with ADHD was also diagnosed with ASD . Importantly, the findings also showed that children diagnosed with both conditions had greater treatment needs and more co-occurring conditions, which further supports the stringent need of a comprehensive assessment. Objective data from QbCheck and QbTest is proven to help identify ADHD alone and to differentiate ADHD from other conditions, including ASD  .
Dr Georgie Siggers, Consultant Neurodevelopment Paediatrician, highlights how the complex interplay between the disorders can cause confusion in identifying ADHD.
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 Zablotsky, B., Bramlett, M. D. & Blumberg, S. J. (2017). The Co-Occurrence of Autism Spectrum Disorder in Children With ADHD. Journal of Attention Disorders. Advanced online publication. doi: 10.1177/1087054717713638 [RETURN]
 Hult, N., Kadesjö, J., Kadesjö, B., Gillberg, C., & Billstedt, E. (2015). ADHD and the QbTest: Diagnostic Validity of QbTest. Journal of Attention Disorders, 1-7. [RETURN]
 Groom, M., Young, Z., Hall, C., Hollis, C., & Gillott, A. (2016). The incremental validity of a computerised assessment added to clinical rating scales to differentiate adult ADHD from autism spectrum disorder. Psychiatry Research, 243, 168-173. doi:10.1016/j.psychres.2016.06.042 [RETURN]