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Schizophrenia is a serious mental illness which interferes with the way someone's mind operates.
Over a long time, schizophrenia may affect the person's personality. As with depression, a chemical imbalance in the brain may cause someone to develop schizophrenia. A person likely to develop schizophrenia may be more sensitive to family stress than other people. Environment Stressful events can often have a strong effect on people who are likely to develop schizophrenia. People with schizophrenia may become easily upset or anxious, even before the illness is detected.