We took my son to a neuropsychologist when he was 8 to rule out ADHD - not because I thought he had it but because I wanted it part of his psych eval that he did not have it. Had the psychologist come back with ADHD as part of the diagnosis, we would've dealt with it, but he didn't.

It's worth having it ruled in or out so that you're addressing your child's needs - whatever they are.