So sorry! I know the challenge well... our dd20 is PG and also bipolar, but her last psych actually thought it was perhaps "just" anxiety and depression. She's needed a lot of help, although has also had a lot of successes. The other three kids really don't seem to have any indication of the anxieties, but are all gifted.
I know one of ds10's best friends in the gifted program is OCD. I know others with anxiety. I hear the evidence is mainly anecdotal, but there seem to be a lot of anecdotes about gifted kids with mental health challenges. frown
Theresa