People with schizophrenia require lifelong treatment. Early treatment may help get symptoms in check before serious complications develop and should help improve the long-term outlook. Schizophrenia involves a variety of problems with thinking (cognition), behavior, and emotions. Signs and symptoms may vary, but usually involve delusions, hallucinations, or disorganized speech, and reflect an impaired ability to function. Symptoms may include Delusions. These are false beliefs that aren't based actually. For example, you think that that you're being harmed or harassed; certain gestures or comments are directed at you; you've got exceptional ability or fame; another person is crazy with you, or a serious catastrophe is close to occurring. Delusions occur in most people with schizophrenia. Schizophrenia may be a serious mental disturbance during which people interpret reality abnormally. Schizophrenia may end in some combination of hallucinations, delusions, and very disordered thinking and behavior that impairs daily functioning, and maybe disabling.