Schizophrenia facts

• Schizophrenia is a chronic, severe, debilitating mental illness that affects about 1% of the population, more than 2 million people in the United States alone.
• With the sudden onset of severe psychotic symptoms, the individual is said to be experiencing acute schizophrenia. Psychotic means out of touch with reality or unable to separate real from unreal experiences.
• There is no known single cause of schizophrenia. As discussed later, it appears that genetic factors produce a vulnerability to schizophrenia, with environmental factors contributing to different degrees in different individuals.
• There are a number of various treatments for schizophrenia. Given the complexity of schizophrenia, the major questions about this disorder (its cause or causes, prevention, and treatment) are unlikely to be resolved in the near future. The public should beware of those offering "the cure" for (or "the cause" of) schizophrenia.
• Schizophrenia is one of the psychotic mental disorders and is characterized by symptoms of thought, behavior, and social problems.
• Symptoms of schizophrenia may include delusions, hallucinations, catatonia, negative symptoms, and disorganized speech or behavior.
• There are five types of schizophrenia based on the kind of symptoms the person has at the time of assessment: paranoid, disorganized, catatonic, undifferentiated, and residual.
• Children as young as 6 years of age can be found to have all the symptoms of schizophrenia as their adult counterparts and to continue to have those symptoms into adulthood.
• Although the term schizophrenia has only been in used since 1911, its symptoms have been described throughout written history.
• Schizophrenia is considered to be the result of a complex group of genetic, psychological, and environmental factors.
• Health-care practitioners diagnose schizophrenia by gathering comprehensive medical, family, mental-health, and social/cultural information.
• The practitioner will also either perform a physical examination or request that the individual's primary-care doctor perform one. The medical examination will usually include lab tests.
• In addition to providing treatment that is appropriate to the diagnosis, professionals attempt to determine the presence of mental illnesses that may co-occur.
• People with schizophrenia are at increased risk of having a number of other mental-health conditions, committing suicide, and otherwise dying earlier than people without this disorder.
• Medications that have been found to be most effective in treating the positive symptoms of schizophrenia are first- and second-generation antipsychotics.
• Psychosocial interventions for schizophrenia include education of family members, assertive community treatment, substance-abuse treatment, social-skills training, supported employment, cognitive behavioral therapy, and weight management.
• Cognitive remediation, peer-to-peer treatment, and weight-management interventions remain the focus topics for research.

What is schizophrenia?

Schizophrenia is a chronic, severe, debilitating mental illness that affects about 1% of the population, corresponding to more than 2 million people in the United States alone. Other statistics about schizophrenia include that it affects men about one and a half times more commonly than women.
It is one of the psychotic mental disorders and is characterized by symptoms of thought, behavior, and social problems. The thought problems associated with schizophrenia are described as psychosis, in that the person's thinking is completely out of touch with reality at times. For example, the sufferer may hear voices or see people that are in no way present or feel like bugs are crawling on their skin when there are none.

The individual with this disorder may also have disorganized speech, disorganized behavior, physically rigid or lax behavior (catatonia), significantly decreased behaviors or feelings, as well as delusions, which are ideas about themselves or others that have no basis in reality (for example, the individual might experience paranoia, in that he or she thinks others are plotting against them when they are not).

What are the different types of schizophrenia?

There are five types of schizophrenia, each based on the kind of symptoms the person has at the time of assessment.

• Paranoid schizophrenia: The individual is preoccupied with one or more delusions or many auditory hallucinations but does not have symptoms of disorganized schizophrenia.
• Disorganized schizophrenia: Prominent symptoms are disorganized speech and behavior, as well as flat or inappropriate affect. The person does not have enough symptoms to be characterized as suffering from catatonic schizophrenia.
• Catatonic schizophrenia: The person with this type of schizophrenia primarily has at least two of the following symptoms: difficulty moving, resistance to moving, excessive movement, abnormal movements, and/or repeating what others say or do.
• Undifferentiated schizophrenia: This is characterized by episodes of two or more of the following symptoms: delusions, hallucinations, disorganized speech or behavior, catatonic behavior or negative symptoms, but the individual does not qualify for a diagnosis of paranoid, disorganized, or catatonic type of schizophrenia.
• Residual schizophrenia: While the full-blown characteristic positive symptoms of schizophrenia (those that involve an excess of normal behavior, such as delusions, paranoia, or heightened sensitivity) are absent, the sufferer has a less severe form of the disorder or has only negative symptoms (symptoms characterized by a decrease in function, such as withdrawal, disinterest, and not speaking)

How common is schizophrenia in children?

Although there have been fewer studies on schizophrenia in children compared to adults, researchers are finding that in children as young as 6 years old can be found to have all the symptoms of their adult counterparts and to continue to have those symptoms into adulthood.

What is the history of schizophrenia?

The term schizophrenia has only been in use since 1911. Soon before that, it was deemed a separate mental illness in 1887 by Emil Kraepelin. Despite that relatively recent history, it has been described throughout written history. Ancient Egyptian, Hindu, Chinese, Greek, and Roman writings described symptoms similar to the positive symptoms of schizophrenia. During medieval times, schizophrenia, like other illnesses, was often viewed as evidence of the sufferer being possessed by spirits or evil powers.
A number of accomplished individuals suffer from schizophrenia. The film A Beautiful Mind depicts the life of John Nash, a noted scientist, and his struggles with paranoid schizophrenia. The film The Soloist explores the challenges faced by Juilliard-trained musician Nathaniel Ayers as a result of schizophrenia.

What are causes of schizophrenia? Is it hereditary?

One frequently asked question about schizophrenia is if it is hereditary. As with most other mental disorders, schizophrenia is not directly passed from one generation to another genetically, and there is no single cause for this illness.
Rather, it is the result of a complex group of genetic, psychological, and environmental factors. Genetically, schizophrenia and bipolar disorder have much in common, in that the two disorders share a number of the same risk genes. However, the fact is that both illnesses also have some genetic factors that are unique. There are some genetic commonalities with schizophrenia and epilepsy as well.

Environmentally, the risks of developing schizophrenia can even occur before birth. For example, the risk of schizophrenia is increased in individuals whose mother had one of certain infections during pregnancy. Difficult life circumstances during childhood, like the early loss of a parent, parental poverty, bullying, witnessing parental violence; being the victim of emotional, sexual, or physical abuse or of physical or emotional neglect; and insecure attachment have been associated with the development of this illness.

Even factors like how well represented an ethnic group is in a neighborhood can be a risk or protective factor for developing schizophrenia. For example, some research indicates that ethnic minorities may be more at risk for developing this disorder if there are fewer members of the ethnic group to which the individual belongs in their neighborhood.

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