ASW Tong, MMF Wu, SKY Liu

Abstract

Introduction: Dual diagnosis of Autism Spectrum Disorder (ASD) and Attention Deficit Hyperactivity Disorder (ADHD) was first recognised officially in 2013. This study aimed to examine the prevalence of their comorbidity in children in the largest public child assessment service in Hong Kong. Methods: The medical data of children with birth year 2012 and 2013 who underwent assessment in Child Assessment Service up to 31st December 2021 with diagnosis ASD and/or ADHD/related diagnosis were retrieved. Data was divided into three groups, children with either ADHD or ASD, and those with both conditions. Their developmental profiles were analysed. Results: 8639 cases with ASD, ADHD/related diagnosis and dual diagnosis were reviewed. Sixteen percent of ADHD/related diagnosis children were also diagnosed with ASD, while 24% of ASD children had comorbid ADHD/related conditions. Conclusion: More awareness on the common comorbidity of ASD and ADHD in children is crucial, early identification of such can allow more efficient management.