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Is schizophrenia a genetic condition?


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Answered 2012-08-18 23:12:37

A combination of genetic and environmental factors play a role in the development of schizophrenia.[2][3] People with a family history of schizophrenia who suffer a transient psychosis have a 20-40% chance of being diagnosed one year later.[23]

Estimates of heritability vary because of the difficulty in separating the effects of genetics and the environment.[24] The greatest risk for developing schizophrenia is having a first-degree relative with the disease (risk is 6.5%); more than 40% of monozygotic twins of those with schizophrenia are also affected.[3] It is likely that many genes are involved, each of small effect and unknown transmission and expression.[3] Many possible candidates have been proposed, including specific copy number variations, NOTCH4, and histone protein loci.[25] A number of genome-wide associations such as zinc finger protein 804A have also been linked.[26] There appears to be significant overlap in the genetics of schizophrenia and Bipolar disorder.[27]

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Is schizophrenia a genetic disorder?

Schizophrenia is partly genetic- one out of ten people who have at least one schizophrenic relative also have schizophrenia (compared to one out of one hundred people in general). About one out of two people whose identical twins have schizophrenia also have schizophrenia. However, schizophrenia is not completely genetic. If schizophrenia was completely genetic, everyone who had an identical twin with schizophrenia would also have schizophrenia. This is not the case. Like I said before, about 50% of people whose identical twins have schizophrenia also have schizophrenia. There are environmental as well as genetic factors to schizophrenia.


Is schizophrenia caused by genetic or environmental factors?

Schizophrenia occurs in the mind, genetic and environmental factors can affect it, but do not directly cause it.


Can schizophrenia occur in those without a genetic predisposition?

Yes, schizophrenia may occur without a specific genetic predisposition for it.


Is Schizophrenia a autosomal dominant disorder?

No. Schizophrenia is not completely genetic, and it also has multiple genes that can cause it.


Is there a strong genetic predispostion toward schizophrenia?

Yes. Half of the people whose identical twins have schizophrenia also have schizophrenia, implying that there is a strong genetic link. However, environmental causes also play a part.


Can schizophrenia be inherited?

Yes, it can, although it is not completely genetic. People with 1 parent with schizophrenia have a 9% chance of developing schizophrenia, which is 9 times that of the general population. People with two parents with schizophrenia have a 36% chance of developing schizophrenia, which is 36 times that of the general population. This shows that there is a strong genetic link.


Is schizophrenia dominant or recessive?

Schizophrenia is only partially genetic, and therefore is neither recessive nor dominant.


What are suspected causes in schizophrenia and alzheimers?

Genetic abnormalities


If a 30 year old has schizophrenia could the mother have it as well?

Yes. Schizophrenia is partly genetic, meaning that if you have a relative with schizophrenia you are likely to also have schizophrenia. About 1/10 of people with a relative with schizophrenia develop schizophrenia, compared to 1/100 people without a relative with schizophrenia.


Is schizophrenia autosomal recessive or dominant?

Schizophrenia is only partially genetic, and therefore is neither recessive nor dominant.


Can schizophrenia and depression be inherited?

Yes, they can, although they are not completely genetic. People with 1 parent with schizophrenia have a 9% chance of developing schizophrenia, which is 9 times that of the general population. People with two parents with schizophrenia have a 36% chance of developing schizophrenia, which is 36 times that of the general population. This shows that there is a strong genetic link. There are similar statistics for depression.


Is schizophrenia autosomal or sex-linked?

The genetic factors affecting the risk of schizophrenia are not yet fully known, but the genes currently associated with schizophrenia are autosomal.


Why is schizophrenia called DID?

It's not. DID is an acronym for Dissociative Identity Disorder. This is a very different condition from schizophrenia.


Can you prevent from getting schizophrenia?

No you cannot prevent schizophrenia. It is a premediated condition that is inside the brain from birth.


In what psychiatric condition is Halloperidol used?

Schizophrenia


What area of the brain causes schizophrenia when damaged?

None, because schizophrenia is a condition determined by checklists and psychiatrists. It is not a condition derived from physical brain damage.


What are two hypotheses for schizophrenia?

One hypothesis is that schizophrenia is the result of biological factors, such as increased dopamine receptors in the brain. This is supported by physical changes in the brains of some people with schizophrenia. Another is that schizophrenia is caused by genetic factors. This is supported by the high incidence of schizophrenia in relatives of people with schizophrenia.


What is a simple definition of the condition 'schizophrenia'?

Schizophrenia is a mental disorder characterized by delusions, agitation, and disorganized speech and thinking. It is classified as a "thought disorder".


How do people get schizophrenia?

Human beings do not acquire (or "get") schizophrenia. It is something that is innate, or in other words, they are born with the condition.


What are the biological factors of schizophrenia?

Schizophrenia involves structural damage to the brain. It also involves abnormalities in the levels of neurotransmitters in the brain. There are also genetic factors.


Is schizophrenia something your born with or do you develop it over time?

This question is rather controversial in psychiatry. Most psychiatrists and psychologists believe that there is a genetic reason for schizophrenia, but that an event in the patient's life triggers the schizophrenia to erupt. This is because schizophrenics often have relatives who also had schizophrenia, hinting that there is a genetic background. However, schizophrenic episodes often occur as a result of stress or a change in a person's life.


Is schizophrenia terminal?

Schizophrenia is a mental disorder. It is not a condition that causes any sort of physical sickness that would lead to death.


Who was the first person to have schizophrenia?

It is not possible to determine who was the first person with schizophrenia. Although the condition was not diagnosed with the same term, there have been recognizable cases of schizophrenia throughout human history.


Do people with schizophrenia remember what they do if they have an psychotic episode?

Typically yes, but it varies from person to person and condition to condition (schizophrenia isn't actually just one disorder--it's a spectrum of disorders).


Can you develop schizophrenia?

People are not born schizophrenic, although they are almost certainly born with the genetic makeup to become that way. Schizophrenia usually develops in young adulthood.