I would like to introduce a clinical practice guideline on the management of Attention Deficit Hyperactivity Disorder in Children and Adolescents (ADHD). To date, this is the first guideline on ADHD jointly developed by Ministry of Health, Academy of Medicine and Malaysian Psychiatric Association. As an external reviewer, I find this book useful and easy to understand. However, it is not made for general public but tailored to specialize readers like psychiatrists, paediatricians, family physicians and general practitioners. They can expect to find some recommendations with regard to assessment, diagnosis and management of ADHD. The use of medication especially psychostimulants was discussed in detail based on the level of evidence in the literature. I wish to congratulate the organizer for the hard work.