Yes, it's possible to have both. It's possible to have any of the "Personality Disorders" and also have BiPolar disorder (Schizotypal is considered a personality disorder within the DSM categories).

I have not personally known anyone who had both Schizotypal PD and BiPolar d/o, but I have known people with other personality d/o's who were also diagnosed with BiPolar d/o. I'm not sure that's helpful!

You can read more about both disorders if you click on the word "disorders" on the blue bar at the top of the page. Also check the "resource directory".

emmy