I was going to object to histrionic PD, but yeah, that does seem like pathologized extraversion. I work with the DSM quite a lot now that I'm pursuing the MSW to licensed clinician route, and people in social work are very, very ambivalent about the DSM because it is so deficits-based and medicalized. I see a use for it--it's good to be able to talk across professions about a client's needs based on a diagnosis. But when you learn about 1. the history of diagnoses (like homosexuality, as the classic example) and 2. the huge funding bias it has to big pharm, the DSM seems like a pretty dangerous thing to regard as biblical (kind of like the Bible, really!).
That said, it's good to remember that when clinicians and psychiatrists are diagnosing a person, usually they are diagnosing a problem that is getting in the way of that person's functioning and independence--something that led to the person showing up in a hospital or office. There is a difference between someone who is an introvert and someone who is social-phobic, in my opinion. In either case, if a person is to work on something like "withdrawal" or social phobia or whatever, the person needs to want to do that (which generally means that s/he needs to identify it as a problem him/herself).
