For what it's worth, what you describe (especially in your 2nd post) sounds a lot more intense than what I experience in my AD/HD symptoms. I think of hyperfocus as something that gives me pleasure... I can only hyperfocus on activities I love doing. You don't seem to be enjoying the inner thoughts. I would suggest telling a psychiatrist as much detail as you can about how these times feel... don't only say "hyperfocus," because it might not be. Take care, hope you are doing OK!