Iirc adhd is a neurodevelopmental condition. So if a 5 year old has similar executive function as the average 5yo he’s probably fine. But if a 10 yo has a 7yo’s levels it’s worth looking at. And if this same person has this even later to the point where it affects life in multiple situations it’s a disorder, medically speaking. Also, some people (not all) grow out of adhd in their adulthood as the brain develops.
Many of the people who grew out of it did it not naturally but because they were on medication. Medication during childhood has been well proven in longitudinal studies to reduce the incidence of adult ADHD.
