How does ADHD affect working memory at a neural level?

Working memory difficulties in ADHD stem from differences in prefrontal cortex regulation and dopamine signaling. Working memory relies on the ability to hold information online, manipulate it, and resist distraction. In ADHD, dopamine and norepinephrine availability in these circuits is less stable, making information harder to maintain. This is why details drop, instructions are forgotten, and multi step tasks feel overwhelming. The information is not absent. It decays faster, especially under stress or low interest. Distraction is not the only problem. Even without interruption, the signal fades. Clinically, this explains why externalizing memory helps. Writing things down, using visual cues, and breaking tasks into steps reduces the demand on fragile internal storage. Working memory challenges are not intelligence deficits. They reflect regulation limits in specific neural systems.