In my fourth year of my PhD on schizophrenia and I'm currently writing up my thesis. I'm procrastinating right now so thought I'd do something useful with what I've been studying.
And no, schizophrenia is not multiple personality disorder.
Edit: I have to get dinner and run some errands. I'm really enjoying this so I will definitely get back and answer the rest of the questions.
Yeah I have no clue what it actually is apart from maybe some hallucinations- of which I'm not quite sure how much the person with Schizophrenia knows it is a hallucination.