People with schizophrenia are not usually violent. In fact, most violent crimes are not committed by people with schizophrenia. However, some symptoms are associated with violence, such as delusions of persecution. Substance abuse may also increase the chance a person will become violent. If a person with schizophrenia becomes violent, the violence is usually directed at family members and tends to take place at home.
The risk of violence among people with schizophrenia is small. But people with the illness attempt suicide much more often than others. About 10 percent (especially young adult males) die by suicide. It is hard to predict which people with schizophrenia are prone to suicide. If you know someone who talks about or attempts suicide, help him or her find professional help right away.
This government agency web site will let you access general information on schizophrenia as well as news and research updates. This link will take you to the web site.
National Institute of Mental Health