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Where Is Schizophrenia Most Prevalent

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In Latin America Chile Had The Highest Share Of Years Lived With Disability Due To Schizophrenia

Schizophrenia Overview

According to 2018 schizophrenia statistics by country, Chile contributed to 2.1% of all YLDs the highest share of all the countries in the region. Its followed by Argentina and Uruguay, which contributed to 1.9% of all YLDs. Haiti is on the other side of the spectrum it had the lowest share at 1.1% of all YLDs in Latin America.

Sex Differences In Age At Onset

While men and women have similar prevalence of Schizophrenia, most of studies demonstrated that female onset is typically 3â5 years later than males. It is now accepted that men has a single peak age for onset which is between 21 and 25 years old and women have two peaks age of onset, one between 25 and 30 years old and another one is after 45 years old as shown in . It is also observed that women with schizophrenia are more associated with seasonality of first admissions as compared to schizophrenic men. The delayed two peaks of onset ages in women have been consistent with other studies which reported that women make up 66%â87% of patients with onset after the age of 40â50 years.

Sex differences in onset age of schizophrenia

Note: Men have a notable peak of incidence in late adolescence and a subsequent sharp decline into middle age. The peak age of incidence rates in women appears in adolescence as well as after 45 years old.

Deaths From Mental Health And Substance Use Disorders

The direct death toll from mental health and substance use disorders is typically low. In this entry, the only direct death estimates result from eating disorders, which occur through malnutrition and related health complications. Direct deaths can also result from alcohol and substance use disorders these are covered in our entry on Substance Use.

However, mental health disorders are also attributed to significant number of indirect deaths through suicide and self-harm. Suicide deaths are strongly linked although not always attributed to mental health disorders. We discuss the evidence of this link between mental health and suicide in detail later in this entry.

In high-income countries, meta-analyses suggest that up to 90 percent of suicide deaths result from underlying mental and substance use disorders. However, in middle to lower-income countries there is evidence that this figure is notably lower. A study by Ferrari et al. attempted to determine the share disease burden from suicide which could be attributed to mental health or substance use disorders.1

As a result, direct attribution of suicide deaths to mental health disorders is difficult. Nonetheless, its estimated that a large share of suicide deaths link back to mental health. Studies suggest that for an individual with depression the risk of suicide is around 20 times higher than an individual without.

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Schizophrenia And Violent Crime: Perpetrators Or Victims

The link between violent acts and severe mental disorder has been proposed for a long time . Quantitative methods have largely confirmed this relationship. For instance, most studies show that violent crime is around 2-10 times more common among individuals diagnosed with schizophrenia than compared populations .

Moreover, a recently published study also indicates that individuals with schizophrenia were much more likely to be convicted of a violent crime in comparison to those who were not.

Sowhat are we to make of all this?

Violence is common. There were 1.3 million incidents of violence reported in England and Wales between July 2013 and June 2014 according to the Crime Survey of England and Wales .

Schizophrenia, although rare, with a median incidence of just around 15 cases per hundred thousand of the population per year, is as yet incurable and persists in people, resulting in a relatively high prevalence .

There has been a consensus that violence risk is increased in schizophrenia. Much of this research was summarised in a meta-analysis in 2009 . It reported an average four-fold increase in violent crime in men with schizophrenia, compared to men without schizophrenia.

However, many older studies were considered small and methodologically limited. They were also seen as unable to adequately assess the temporal relationship between schizophrenia and violence.

Urbanicity And The Prevalence Of Schizophrenia

Can I Still Live a Normal Life If I have Schizophrenia?

In the previous systematic review of the incidence of schizophrenia, we found that urban sites had significantly higher incidence rates of schizophrenia than mixed urban/rural sites . Contrary to our expectations, the prevalence of schizophrenia did not differ according to urbanicity. While Figure 10 suggests that mixed urban/rural sites have higher prevalence estimates than pure urban and rural sites, this study found, in fact, that there was no significant difference between urban, rural, and mixed sites. Perhaps the inclusion of many sites from the developing world in this review has confounded the expected urban/rural gradient. This will be examined in more detail in future analyses.

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What Are The Types Of Schizophrenia

There are different types of schizophrenia. The International Classification of Diseases manual describes them as below.

Paranoid schizophrenia

  • Pranks, giggling and health complaints.
  • Usually diagnosed in adolescents or young adults.

Catatonic schizophrenia

  • Unusual movements, often switching between being very active and very still.
  • You may not talk at all.

Simple schizophrenia

  • Negative symptoms are prominent early and get worse quickly.
  • Positive symptoms are rare.

Undifferentiated schizophrenia

Your diagnosis may have some signs of paranoid, hebephrenic or catatonic schizophrenia, but doesnt obviously fit into one of these types alone.

Residual schizophrenia

This type of schizophrenia is diagnosed in the later stages of schizophrenia. You may be diagnosed with this if you have a history of schizophrenia but only continue to experience negative symptoms.

Other schizophrenia

There are other types of schizophrenia according to the ICD-10, such as.

  • Cenesthopathic schizophrenia. This is where people experience unusual bodily sensations.
  • Schizophreniform. Schizophreniform disorder is a type of psychotic illness with symptoms similar to those of schizophrenia. But symptoms last for a short period.

Unspecified schizophrenia

Symptoms meet the general conditions for a diagnosis, but do not fit in to any of the above categories.

Looking After Your Physical Health

Schizophrenia takes a toll on your physical health as well as your mental health. It can sap your energy, confidence and motivation you might feel less capable of keeping up your physical health or lose the desire to try.

Another major influence on your physical health is the side-effects of antipsychotic medication. Newer antipsychotic medications have fewer side-effects, but weight gain is still a common one.

People being treated for schizophrenia are much more likely than the general population to be overweight, have high blood pressure and develop diabetes.

Theyre also more likely to smoke, drink too much and use recreational drugs, which can have a negative effect on your mental and physical health.

If youre struggling with these problems, you may hear your doctor use the term metabolic syndrome. It means you have some combination of:

  • weight gain around the abdomen
  • high blood pressure
  • low levels of the good cholesterol
  • high blood glucose levels.

Metabolic syndrome is common in people with a sedentary lifestyle and unhealthy diet, but its especially common in people with schizophrenia.

There is support to help you get healthy and stay healthy.

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Schizophrenia And Violence Statistics

  • Patients diagnosed with schizophrenia are four to six times more likely to commit a violent crime than the general population.
  • 6% of homicide acts are committed by schizophrenia patients in Western countries.
  • One study in Sweden found that 13.2% of patients with schizophrenia had at least one violent offense.
  • Within the first five years of a schizophrenia diagnosis, 10.7% of men and 2.7% of women were convicted of a violent offense in Sweden.
  • The rate of violent offense among patients with schizophrenia and related disease was nearly five times higher than among their siblings and almost seven times higher than matched individuals in the general population in Sweden.

Over 69% Of Individuals With Schizophrenia Dont Get The Care They Need

What is schizophrenia? – Anees Bahji

One of the reasons why most people with schizophrenia do not get proper treatment is social stigma. Facts about schizophrenia report that feeling stigmatized makes them less likely to seek medical care. Whats more, 90% of people with untreated schizophrenia live in low- and middle-income countries. That translates to the lack of access to adequate mental health care.

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Case Definitions And Study Variables

We defined an incident case of SD as the first appearance of an ICD-9-CM code related to schizophrenia spectrum disorders in the outpatient or inpatient settings during the study period.

HCU among patients with SD included outpatient visits to general practitioners, visits to mental health specialists, length of hospital stay and work absences, and antipsychotic dispensations.

Sociodemographic covariates included age, sex, nationality, urban/rural residence, and social exclusion risk . Social exclusion risk classification is based on multiple aspects including unemployment, foreign in irregular situation or without resources. Rural areas were classified according to: population density , urban nucleus proximity, population trend, percentage of employment in primary, secondary and tertiary sectors, and territorial structure.

We identified antipsychotic drugs through the ATC code N05A and first classified by formulation, differentiating between oral antipsychotic and long-acting injection . These two groups were sub-classified into first- and second- generation antipsychotics. Active ingredients included in each of the subgroups are described in Additional file . Exposure time to any treatment was defined as time from the first to the last dispensation. If only one dispensation was collected, time was estimated as date of the dispensation plus 30days. Antipsychotic polypharmacy was defined as the overlap of two or more antipsychotic drugs dispensed simultaneously over time.

Psychotic Symptoms And Schizophrenia Diagnosis By Race

  • The lifetime prevalence of self-reported psychotic symptoms is highest in black Americans , Latino Americans , and white Americans .
  • The lifetime prevalence of self-reported psychotic symptoms is lowest in Asian Americans .
  • Research has found that black Americans are three to four times more likely than white Americans to receive a Schizophrenia diagnosis.

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Disease Burden Of Mental Health And Substance Use Disorders

Health impacts are often measured in terms of total numbers of deaths, but a focus on mortality means that the burden of mental health disorders can be underestimated.2 Measuring the health impact by mortality alone fails to capture the impact that mental health disorders have on an individuals wellbeing. The disease burden measured in Disability-Adjusted Life Years considers not only the mortality associated with a disorder, but also years lived with disability or health burden. The map shows DALYs as a share of total disease burden mental and substance use disorders account for around 5 percent of global disease burden in 2017, but this reaches up to 10 percent in several countries. These disorders have the highest contribution to overall health burden in Australia, Saudi Arabia and Iran.

In 2017, an estimated 264 million people in the world experienced depression. A breakdown of the number of people with depression by world region can be seen here and a country by country view on a world map is here.In all countries the median estimate for the prevalence of depression is higher for women than for men.

DALYs from depression

The chart found here shows the health burden of depression as measured in Disability Adjusted Life Years per 100,000. A time-series perspective on DALYs by age is here.

Genetic Variations Increase Your Risk By 80% According To Schizophrenia Stats And Facts


Although there isnt just one factor listed among schizophrenia causes, studies reveal that genetic variation plays a considerable role. In fact, one research discovered that chances of having the disorder increase by 10% if a parent or a sibling has it. If both parents have it, then there is a 40% chance that their child will have schizophrenia, too. Still, the greatest risk is if an identical twin has it. In that case, the other twin has a 50% chance of having schizophrenia.

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What Did They Find

The take-home message from their study is that about seven to eight individuals out of 1,000 will be affected by schizophrenia. To be more precise, the researchers found the following median estimates for the prevalence of schizophrenia: 4.6 out of 1,000 people have the disease at a specific time point 3.3 per 1,000 have the disease within a surveillance period one to 12 months long the lifetime prevalence is 4.0 per 1,000 and the lifetime morbid risk is 7.2 per 1,000. While previous research has shown that men have a higher risk of developing schizophrenia, the researchers found that the prevalence of schizophrenia was the same in men and women . The prevalence of schizophrenia was lower in poorer countries than in richer countries.

What Are The Challenges Of Measuring Depression

Content validity: We might want to know whether the questionnaires were measuring depression at all. How would we be sure of this?

We could first think about which emotions and behaviors we associate with depression sadness, tiredness, guilt, a loss of energy, and so on and we could make sure that the questionnaires ask about all of these emotions.

Criterion validity: We could also find out if peoples responses to the questions are correlated with other things we associate with depression.

For example, if someone is severely depressed, we might expect that they are also less sociable and that they perform poorly at work or school. We could test whether this is the case for people who scored high on a questionnaire for depression.

Discriminant validity: We could also test whether their responses are uncorrelated with things we dont associate with depression, such as their height or intelligence.

Internal consistency: Another important thing wed want to know is whether the questions were actually tapping into the same phenomenon.

Do all the questions measure depression or are some measuring other concepts instead? To test for this, we could look at how closely peoples answers to different questions align with each other.

One consequence of this focus is that scores shouldnt also measure other concepts.

Fortunately, there are straightforward ways to test this: we could measure how consistent different doctors were at diagnosing the same patients.

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How Is Schizophrenia Diagnosed

If symptoms are present, your doctor will perform a complete medical history and physical examination. Although there are no laboratory tests to specifically diagnose schizophrenia, the doctor might use various diagnostic tests â such as MRI or CT scans or blood tests â to rule out physical illness as the cause of your symptoms.

If the doctor finds no physical reason for the symptoms, he or she might refer the person to a psychiatrist or psychologist, healthcare professionals who are specially trained to diagnose and treat mental illnesses. Psychiatrists and psychologists use specially designed interview and assessment tools to evaluate a person for schizophrenia. The doctor or therapist bases his or her diagnosis on the personâs report of symptoms, and his or her observation of the personâs attitude and behavior.

The doctor or therapist then determines if the personâs symptoms point to a specific disorder as outlined in the Diagnostic and Statistical Manual of Mental Disorders , which is published by the American Psychiatric Association and is the standard reference book for recognized mental illnesses. According to the DSM-5, a diagnosis of schizophrenia is made if a person has two or more core symptoms, one of which must be hallucinations, delusions, or disorganized speech for at least one month. The other core symptoms are gross disorganization and diminished emotional expression. Other DSM-5 criteria for a diagnosis of schizophrenia include:

Total Costs Of Schizophrenia Amount To Nearly $63 Million A Year

What is Schizophrenia?

Despite the low prevalence rates of schizophrenia, this is quite a costly disease. Its overall cost includes direct and indirect expenses. First, direct costs are counseling and medication. Second, indirect expenses are lost productivity and financial assistance. Both can reach up to $63 million per year. Furthermore, this disorder contributes 13.4 million YLDs to the global burden of the disease, or 1.7% of total YLDs in 2016.

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At What Age Is Schizophrenia Diagnosed

Although schizophrenia can occur at any age, the average age of onset tends to be in the late teens to the early 20s for men, and the late 20s to early 30s for women. It is uncommon for schizophrenia to be diagnosed in a person younger than 12 or older than 40. It is possible to live well with schizophrenia.

Fish Oil Could Reduce The Risk Of Developing The Condition

Fish oil, a rich source of omega-3 acids, can reduce inflammation in the body and aid brain development and function. According to the data on the prevalence of schizophrenia, a lack of these fatty acids can have links to the disorder. This discovery prompted scientists to carry out a study on 81 young people at risk of schizophrenia. The study confirmed that those who took fish oil supplements were less likely to develop the condition.

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Medical Expenditure Panel Survey

  • The MEPS collect data from community-dwelling people in the U.S. It does not include patients living in group homes, supported living arrangements, prisons, and institutions. In addition, homeless people and undocumented immigrants are excluded. These groups may have a higher prevalence of schizophrenia. MEPS survey responses were obtained from a single respondent for all the members of the family, therefore some recall bias may be associated with the responses.
  • Patients for the schizophrenia study were selected based on ICD-9 codes only. Due to the stigma associated with the condition, physicians are known to give patients an interim non-schizophrenia diagnosis when uncertain about schizophrenia until it can be confirmed. To capture patients who may be given an interim non-schizophrenia diagnosis, researchers used the ICD-9 code for non-organic psychoses in addition to that for schizophrenic disorder in their study.5 MEPS collects information about conditions through patient interviews and some miscoding may occur as the household participants describe their conditions during the interviews and the coders record the ICD-9 codes for the diagnosis.

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