Home > The Facts > Schizophrenia Schizophrenia What is schizophrenia? Schizophrenia is a mental illness that affects about 1% of the adult population. Schizophrenia affects both men and women with equal Institute of Mental Health: The Numbers Count). Schizophrenia is often personalities. However, schizophrenia is not related to DID, but more Symptoms of schizophrenia Schizophrenia often interferes with a person’s ability to think decisions, and to relate to others. The symptoms of schizophrenia often Other things besides schizophrenia may also cause similar symptoms, What causes schizophrenia? The exact cause of schizophrenia is not known. Like other medical illnesses such as cancer or diabetes, schizophrenia seems to be caused inheriting schizophrenia. However, genes only increase the chances play a role in developing schizophrenia. child, can put you at high risk of developing schizophrenia. Also, development of schizophrenia. It’s likely that substance misuse can of a person with schizophrenia. Schizophrenia can be treated and people with schizophrenia can lead schizophrenia, seeking help is important. It should begin with a visit you mange day to day tasks. Some who have schizophrenia may have and friends of a person who has schizophrenia. Check out the NAMI Substance Abuse and Mental Health Services Administration Schizophrenia