This article updates and replaces the 2011 clinical practice guideline revision published by the American Academy of Pediatrics (AAP), “Clinical Pr...

This article updates and replaces the 2011 clinical practice guideline revision published by the American Academy of Pediatrics (AAP), “Clinical Practice Guideline: Diagnosis and Evaluation of the Child with Attention-Deficit/Hyperactivity Disorder.”1 This guideline, like the previous document, addresses the evaluation, diagnosis, and treatment of attention-deficit/hyperactivity disorder (ADHD) in children from age 4 years to their 18th birthday, with special guidance provided for ADHD care for preschool-aged children and adolescents. (Note that for the purposes of this document, “preschool-aged” refers