Schizophrenia (literally "split mind") is often thought of as a split or dual personality. However, this disease is best defined as a disorganization of normal thought and feeling. It is probably caused by the malfunctioning of the cells through which information flows within the brain. Symptoms usually appear in late adolescence or early adulthood, and extreme mental stress almost always triggers them. The illness is lifelong, but acute attacks tend to come and go, and usually occur at times of emotional upheaval or personal loss. What are The Symptoms?

Some popular novels, plays and movies have encouraged us to think of schizophrenia in extremely narrow and dramatic terms. Schizophrenia has been presented quite often in terms of the split personality, two seemingly individual and separate people living with­in the same body.

For most people with schizophrenia, an attack begins with a gradual, or occasionally sudden, withdrawal from day-to-day activities. The person's speech may become increasingly vague, and he or she may seem to be unable to follow a simple conversation. An acute attack happens unexpectedly. Often the onset is so gradual that it is difficult to know when psychotic symptoms appear. Among such symptoms are apparently disconnected remarks, along with blank looks, that are followed by sudden statements that seem to spring into the speaker's mind.

Schizophrenics often believe that others hear and "steal" their thoughts. Sometimes they fear they have lost control of bodily movement as well as thought, as if they were puppets. They frequently believe they hear voices, often hostile ones. Less commonly, they have hallucinations of odd physical sensations, of being given poison, or otherwise being attacked by others. In time many schizophrenics build up a set of beliefs in a fantasy world. They may express exaggerated feelings of happiness, bewilderment, or despair. They may laugh at a sad moment or cry without cause. Or they may seem devoid of feeling, so that it becomes almost impossible to make emotional contact with them.

There are several types of schizophrenia that are characterized by the predominant symptoms, but the only practical distinction that most doctors now make is between the paranoid and other types. The main symptom of a person with paranoid schizophrenia is constant suspicion and resentment, accompanied by fear that people are hostile or even plotting to destroy him or her. What are The Risks?

Most young and middle-aged patients in mental hospitals are there because they are schizophrenic. About 1 person in 1000 has been treated for the disorder. Men and women are equally susceptible. Paranoid schizophrenia is most common in early adult­hood (late 20's through 30's).

The abnormality of brain chemistry that underlies schizophrenia can be inherited, but if it runs in your family, you will not necessarily have schizophrenic attacks. You may, however, have either a "schizoid personality" (a tendency towards extreme shyness and withdrawal) or a "paranoid personality" (a tendency towards over-sensitivity and distrustfulness) .

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