Is the focus on "High IQ" helpful here? Why would the treatment for ADHD, Depression, Social Anxiety, etc, be any different for them than someone with a lower IQ?
Because in some cases it's none of the above; it's just not fitting in, and getting "treated" for being different is often the beginning of a long and sad history of self-blame and isolation.
because high IQ magnifies a lot of issues in ways that people not personally concerned or untrained may not be able to grasp.