Overview
What Is ADHD? Prevalence, Neurobiology, Genetics, and Course
Go Deeper
This summary distills key findings. For the full clinical discussion with complete citations, explore the source lessons.
Primary source
What ADHD Actually IsWhy This Module Matters + The Diagnostic FrameworkWhat ADHD Actually IsThe Catecholamine FrameworkWhat ADHD Actually IsWhat Causes ADHD: Genetics & EnvironmentAlso covered in
What ADHD Actually IsBrain Structure, Networks & ModelsWhat ADHD Actually IsHeterogeneity, Emotional Dysregulation & NeuroimagingWhat ADHD Actually IsCommon Clinical Questions the Evidence Has AnsweredMonitoring & Long-Term ManagementLong-Term Prognosis: What the Data ShowsADHD Across the LifespanA Developmental Framework for ADHDLast updated: 2026-04-19