Schizophrenia is a severe mental illness characterized by psychosis, disorganized personality and thinking, and loss of contact with reality. It has multiple potential causes including biochemical, genetic, stress, and physiological factors. Symptoms can be positive such as hallucinations or negative such as reduced emotional expression. Treatment involves medications, therapies, and programs to help patients function independently. The film A Beautiful Mind accurately portrayed some experiences of schizophrenia including obsessive hallucinations, and showed that those with the illness can still live normal lives with treatment and awareness of their condition. Nurses must understand schizophrenia from the patient's perspective to effectively support them.