Originally Posted by Evemomma
The brain is so complex that it cannot be examined/categorized/diagnosed with the same certainty as, say, a heart defect. There is so much we don't know.

That's a good way of putting it. I need to let go of the idea that ADHD can be simplified.

A friend of mine has a child with the classic, easy to recognize, stare-you-in-the-face, no doubt whatsoever, version of ADHD, whereas my son... not so much. Is it still ADHD? Probably. Or put it this way: it's ADHD as we know it today.