What is schizophrenia? Schizophrenia is a complex brain disorder, which affects about one in a 100 or between 150,000 and 200,000 Australians.
Schizophrenia is a mental illness that causes people to experience reality in a different way. It affects one in 100 Australians and is a highly stigmatized, often misunderstood illness.
Schizophrenia affects approximately 24 million people or 1 in 300 people (0.32%) worldwide. This rate is 1 in 222 people (0.45%) among adults (2). It is not as common as many other mental disorders.
The most common mental illnesses in Australia are Anxiety Disorders, Affective Disorders (such as Depression) and Substance use disorders (ABS 2022a).
By all accounts, serious mental illnesses include “schizophrenia-spectrum disorders,” “severe bipolar disorder,” and “severe major depression” as specifically and narrowly defined in DSM. People with those disorders comprise the bulk of those with serious mental illness.
Background: Schizophrenia patients are typically found to have low IQ both pre- and post-onset, in comparison to the general population. However, a subgroup of patients displays above average IQ pre-onset. The nature of these patients' illness and its relationship to typical schizophrenia is not well understood.
Schizophrenia is a chronic, severe mental disorder that affects the way a person thinks, acts, expresses emotions, perceives reality, and relates to others. Though schizophrenia isn't as common as other major mental illnesses, it can be the most chronic and disabling.
Schizophrenia is a serious mental disorder in which people interpret reality abnormally. Schizophrenia may result in some combination of hallucinations, delusions, and extremely disordered thinking and behavior that impairs daily functioning, and can be disabling. People with schizophrenia require lifelong treatment.
What is the life expectancy for people with schizophrenia? People with schizophrenia generally live about 15 to 20 years less than those without the condition.
The peak age of onset of schizophrenia is 15 – 25 years in men and 20 – 30 years in women. It is often preceded by a prodromal phase of vague symptoms, some odd behaviours and a decline in functioning at school or work and interpersonally.
The risk for schizophrenia has been found to be somewhat higher in men than in women, with the incidence risk ratio being 1.3–1.4. Schizophrenia tends to develop later in women, but there do not appear to be any differences between men and women in the earliest symptoms and signs during the prodromal phase.
In Australia, schizophrenia affects around 2.4 per 1000 people. It is slightly more common in men compared to women (6).
What is schizophrenia? Schizophrenia is a complex brain disorder, which affects about one in a 100 or between 150,000 and 200,000 Australians.
A mental health issue may be considered a disability, but not always. There are many different types of mental health conditions such as depression, anxiety disorder, obsessive-compulsive disorder, post traumatic stress disorder, personality disorders and schizophrenia.
Some researchers believe that problems with brain development may be partly responsible for schizophrenia. Others believe that inflammation in the brain may damage cells that are used for thinking and perception. Many other things could also play a role, including: Exposure to viruses before birth.
Schizophrenia is associated with changes in the structure and functioning of a number of key brain systems, including prefrontal and medial temporal lobe regions involved in working memory and declarative memory, respectively.
Unfortunately, most people with schizophrenia are unaware that their symptoms are warning signs of a mental disorder. Their lives may be unraveling, yet they may believe that their experiences are normal. Or they may feel that they're blessed or cursed with special insights that others can't see.
Previous studies have found that patients with full-blown schizophrenia lack self-awareness of illness (4, 10). About 46% of FEP patients showed poor insight (11) and insight impairment is associated with multiple cognitive deficits (12).
Compared to their healthy counterparts in the general population, individuals diagnosed with schizophrenia are 4 to 6 times more likely to commit a violent crime. In Western countries, 6% of the homicide perpetrators in the populations were labeled schizophrenic.
While schizophrenia typically causes hallucinations and delusions, many people with the disorder also have cognitive deficits, including problems with short- and long-term memory.
Past studies have reported that offspring of affected mothers have a higher risk of schizophrenia than the offspring of affected fathers; however, other studies found no such maternal effect [Gottesman and Shields, 1976].
Schizophrenia usually involves delusions (false beliefs), hallucinations (seeing or hearing things that don't exist), unusual physical behavior, and disorganized thinking and speech. It is common for people with schizophrenia to have paranoid thoughts or hear voices.
In some people, schizophrenia appears suddenly and without warning. But for most, it comes on slowly, with subtle warning signs and a gradual decline in functioning, long before the first severe episode. Often, friends or family members will know early on that something is wrong, without knowing exactly what.