What personality disorder does Dexter Morgan have?

Since he's fictional I assume he has many but which ones do you think he has?

Well of course sociopathy

Scientifically he's a sadist, with sociopathic tendencies.

That scratch is so photoshopped it's laughable.

Hes sociopathic

@jonsmith: Well, yeah they can't scratch the leads face for real. Lose money that way..or so says Hollywood

I guess he's a sociopath, though I heard somewhere that psychologists and sociologists don't use that term anymore.

Aside from sociopathy. That one is kind of obvious.

To me he seems like he has schizophrenia (due to talking to Harry) with schizoid tendencies and maybe some other stuff too.

I wouldn't say so. He seems perfectly aware that Harry isn't really there and shows no other signs.

@sheenlantern: Yeah but I thought only people with schizophrenia were able to hallucinate like that. He physically hears and sees the man that raised him. Even if he knows that he's projecting it himself that must still count for something.