Schizophrenia is a severe brain disorder in which people see what’s real differently. Schizophrenia may cause hallucinations, delusions and extremely disordered thinking and behavior.

Contrary to popular belief, schizophrenia isn’t a split personality or multiple personality. The word “schizophrenia” does mean “split mind,” but it refers to a disruption of the usual balance of emotions and thinking. Source: Mayo Clinic