Margaret Tuchman quoted a study that said, "It has been speculated that neurotic personalities may be more at risk than extroverts," I, too, have frequently wondered about the connection between PD and personality. When I was professionally active I remember reading a research article that pointed out that toddlers (around the age of 2) who were shy had much less dopamine than other toddlers. I wondered when I read that if those shy toddlers might later be the ones who got PD. Actually, I don't think I was a shy toddler, so it doesn't hold up all the way--but maybe the low dopamine came first rather than the PD personality. I remember reading on this list the other day that one of you became much more outgoing after being diagnosed with PD (Was it really after the diagnosis, or after starting Levadopa?) Just a thought. Happy day, everyone! Joan