Why does dopamine dysregulation matter so much in ADHD?

Dopamine helps regulate motivation, attention, and reward. In ADHD, dopamine signaling is less consistent, which makes it harder to initiate tasks, sustain effort, or feel rewarded by routine activities. This is why interest and urgency drive focus more than importance. This is also why people with ADHD may chase novelty or struggle with boredom. The brain is seeking stimulation to reach a functional level of engagement. Understanding dopamine shifts the narrative away from willpower and toward neurobiology.