>People thinking it’s not a real condition.
the person you're responding to meant statements like yours:
>Frankly, the symptoms you describe apply to pretty much everybody, and are just the things one deals with in life.
According to the NIH, prevalence of severe ADHD in children is around 4% [1]. This differs by degree from "the things one deals with in life" for most people - it's an extreme version that can be debilitating without treatment.
[1] https://www.nimh.nih.gov/health/statistics/attention-deficit...