In my case, I know that my problem with OCD is directly linked to my occupation, which is the polar opposite of the arts. I am a lawyer. My therapist told me a long time ago that OCD (particularly the obsessive thinking part) affects a lot of lawyers because of the way we are trained to think. We are taught from the very first day of law school to analyze and re-analyze minute details. So, I don't think it's out of the question that one's temperament or occupational training can correlate with OCD.