While observable behaviors like distractibility and missed deadlines define traditional ADHD diagnoses, they tell only part of the story. The "ADHD Iceberg" illustrates how hidden cognitive labor, elaborate compensatory strategies, and emotional dysregulation often mask significant functional impairment—especially in high-achieving adults and women. Understanding ADHD requires looking past outward success to assess the true effort, energy, and internal toll required to maintain everyday life.

ADHD burnout is not a failure of motivation or resilience. It is a nervous system response to chronic cognitive, emotional, and sensory load. This article reframes burnout through a neuropsychological and regulatory lens, distinguishing it from depression and shutdown while highlighting sensitivity as an adaptive early-warning system.