What is ADHD?

 

Attention Deficit Hyperactivity Disorder (ADHD) is one of the most common neurodevelopmental disorders to be found among children. Not all children exhibit hyperactivity/impulsivity in which case their dominant feature is attention deficit.

 

The worldwide prevalence rate of ADHD in children is 7.2% (Thomas et al., 2015) while the current estimate among Hong Kong children is 6.4% (Liu et al., 2018). 

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1. Thomas R, Sanders S, Doust J, et al. Prevalence of attention-deficit/hyperactivity disorder: a systematic review and meta-analysis. Pediatrics 2015; 135:e994.

2. Liu, A., Xu, Y., Yan, Q., Tong, L. (2018). The prevalence of attention deficit/hyperactivity disorder among Chinese children and adolescents. Scientific Reports, 8(1), 1–15.