[doppelganger27]

> ADHD is defined in the DSM-IV and now -5 as presenting with predominantly hyperactive tendencies or with predominantly inattentive tendencies (or combined, presenting both).

This was a little unclear to me until I looked into the wikipedia page you linked a bit more[1]. To try to clarify in case others are in the same spot, ADHD has 3 primary "sub-types:"

* Predominantly inattentive, which is the form discussed in the original article.

* Predominantly hyperactive-impulsive, which most diagnosed boys exhibit.

* Combined (AKA both inattentive and hyperactive-impulsive)

I'm not sure if the most common case for young boys is only hyperactive or if it's combined. Either way, the symptoms of hyperactivity are most disruptive, so they are what causes most people to seek medical help.

[1]: https://en.wikipedia.org/wiki/Attention_deficit_hyperactivit...