Having an IQ over 130 may make you more prone to mental illness according to a study. Some of the mental illnesses identified included autism, adhd, anxiety disorder, etc. While I don't know if it's true or not it is still an interesting study. I'm actually quite skeptical of psychology as psychology is not a "hard science" and has often been abused by those in positions of authority.
At the same time some aspects of psychology appear to work (behaviorism). Mental health is serious and anyone who has a condition which causes misery for themselves, or which puts themselves and or others in danger, should seek help.