It depends on your point of view. Type 1 schizophrenia is characterized by positive symptoms, including delusions and hallucinations. Type 2 schizophrenia is characterized by negative symptoms, including flat affect and social withdrawal. Each can cause great difficulties in everyday life.
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.
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The chance of the child of someone with schizophrenia also having schizophrenia is about 10 to 15 percent.
Approximately 1%. (This is also the percentage, worldwide, of the population that suffers from schizophrenia.)
The majority of people with schizophrenia have normal karyotypes. If the karyotype is abnormal, it will be a coincidence and not the cause of the schizophrenia. For example, you can have Turner syndrome (1 X chromosome) and schizophrenia at the same time, but the Turner syndrome wouldn't have caused the schizophrenia.
Type 1 diabetes is less common than Type 2, but not necessarily worse. Type 1 diabetes requires the injection of insulin on a regular daily basis. Due to improvements in medical technology, the needles used for this purpose are now extremely fine (very small) to the point that you hardly feel the sting of the needle, if at all. Both forms of diabetes are easily treatable, requiring minimal lifestyle changes, compared to a decade ago.
No
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Approximately 1% of the American population is estimated to suffer from schizophrenia.
The prevalence rate for Schizophrenia is less than 1% within the general population. The prevalence rate increases the closer you are to a blood relative who suffers from the illness (twins are more likely to suffer from it than ordinary siblings or children to their parents). This suggests a genetic link.
There is no one gene for schizophrenia. However, there are many different genes that may contribute to schizophrenia. A gene on chromosome 1 in the 22 family is implicated in schizophrenia, as well as genes on chromosomes 11 and 6.
No. Scientists have long known that schizophrenia runs in families. The illness occurs in 1 percent of the general population, but it occurs in 10 percent of people who have a first-degree relative with the disorder, such as a parent, brother, or sister. People who have second-degree relatives (aunts, uncles, grandparents, or cousins) with the disease also develop schizophrenia more often than the general population. The risk is highest for an identical twin of a person with schizophrenia. He or she has a 40 to 65 percent chance of developing the disorder.