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Disorganized schizophrenia, or hebephrenia, is an obsolete term for a subtype of schizophrenia.It is no longer recognized as a separate condition, following the publication of the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition in 2013, which dropped the concept of subtypes of schizophrenia, and global adoption of the eleventh revision of the International Classification ...
The causes of schizophrenia may include genetic and environmental factors. [7] Genetic factors include a variety of common and rare genetic variants . [ 21 ] Possible environmental factors include being raised in a city , childhood adversity, cannabis use during adolescence, infections, the age of a person's mother or father , and poor ...
In schizophrenia, patients experience two types of symptoms: positive and negative. Positive symptoms include behavior added on to a person's daily functioning. For instance, delusions , hallucinations , disorganized speech, disorganized behavior and thought are all positive symptoms.
Schizophreniform disorder is a type of mental illness that is characterized by psychosis and closely related to schizophrenia.Both schizophrenia and schizophreniform disorder, as defined by the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR), have the same symptoms and essential features except for two differences: the level of functional impairment and the duration of symptoms.
The causes of schizophrenia that underlie the development of schizophrenia, a psychiatric disorder, are complex and not clearly understood.A number of hypotheses including the dopamine hypothesis, and the glutamate hypothesis have been put forward in an attempt to explain the link between altered brain function and the symptoms and development of schizophrenia.
This additional post-menopausal peak of late-onset schizophrenia in women calls into question the etiology of the disease and raises a debate about "subtypes" of schizophrenia, with men and women being susceptible to different types (see causes of schizophrenia). This is further supported by the variability in presentation of the disease ...
Dementia praecox was reconstituted as schizophrenia, paranoia was renamed as delusional disorder and manic-depressive insanity as bipolar disorder (epilepsy was transferred from psychiatry to neurology). The 'mental symptoms' included under the concept schizophrenia are real enough, affect people, and will always need understanding and treatment.
Correlational studies of schizotypy and autistic traits tend to find positive correlations, most strongly with negative schizotypy, to a lesser extent disorganized schizotypy, and weak, absent, or negative correlations with positive schizotypy. [43] [34] [44] Diagnosed schizophrenia and autism spectrum disorder (ASD) also overlap statistically.
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