Schizophrenia is a serious disorder that affects how a person thinks, feels and acts. Someone with schizophrenia may have difficulty distinguishing between what is real and what is imaginary; may be unresponsive or withdrawn; and may have difficulty expressing normal emotions in social situations.

Contrary to public perception, schizophrenia is not split personality or multiple personality. The vast majority of people with schizophrenia are not violent and do not pose a danger to others. Schizophrenia is not caused by childhood experiences, poor parenting or lack of willpower, nor are the symptoms identical for each person.

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Link: http://www.mentalhealthamerica.net/go/information/get-info/schizophrenia/schizophrenia-what-you-need-to-know/schizophrenia-what-you-need-to-know/