Most people think it means that a person is insane.
That is not true. Nor is a schizophrenic person a split personality like Dr. Jekyll and Mr. Hyde. These and other misconceptions have led to an unnecessary stigma attached to persons suffering from schizophrenia. This forces many people to suffer silently, to hide the fact that they are suffering and to avoid seeking treatment. Schizophrenia is a disease that afflicts the brain.