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Schizophrenia: Symptoms, causes and treatments

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Schizophrenia is a chronic brain disorder that affects less than one percent of the U.S. population. When schizophrenia is active, symptoms can include delusions, hallucinations, disorganized speech, trouble with thinking and lack of motivation. However, with treatment, most symptoms of schizophrenia will greatly improve and the likelihood of a recurrence can be diminished.

While there is no cure for schizophrenia, research is leading to innovative and safer treatments. Experts also are unraveling the causes of the disease by studying genetics, conducting behavioral research, and using advanced imaging to look at the brain’s structure and function. These approaches hold the promise of new, and more effective therapies.

The complexity of schizophrenia may help explain why there are misconceptions about the disease. Schizophrenia does not mean split personality or multiple-personality. Most people with schizophrenia are not any more dangerous or violent than people in the general population. While limited mental health resources in the community may lead to homelessness and frequent hospitalizations, it is a misconception that people with schizophrenia end up homeless or living in hospitals. Most people with schizophrenia live with their family, in group homes or on their own.

Research has shown that schizophrenia affects men and women fairly equally but may have an earlier onset in males. Rates are similar around the world. People with schizophrenia are more likely to die younger than the general population, largely because of high rates of co-occurring medical conditions, such as heart disease and diabetes.

When the disease is active, it can be characterized by episodes in which the person is unable to distinguish between real and unreal experiences. As with any illness, the severity, duration and frequency of symptoms can vary; however, in persons with schizophrenia, the incidence of severe psychotic symptoms often decreases as the person becomes older. Not taking medications as prescribed, the use of alcohol or illicit drugs, and stressful situations tend to increase symptoms. Symptoms fall into three major categories:

Positive symptoms: (those abnormally present) Hallucinations, such as hearing voices or seeing things that do not exist, paranoia and exaggerated or distorted perceptions, beliefs and behaviors.

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