Think your child has ADHD? What your pediatrician can — and should — do – Harvard Health Blog ADHD, or attention deficit hyperactivity disorder, is the most common neurobehavioral disorder of childhood. It affects approximately 7% to 8% of all children and youth in the US. As the American Academy of Pediatrics (AAP) pointed out in their recent clinical practice guideline for ADHD, that’s more than the mental health system can handle, which means that pediatricians need to step up…