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Alogia contains both positive and negative symptoms, with the poverty of content of speech as the disorganization factor, and poverty of speech, response latency, and thought blocking as the negative symptom factors. [23] Alogia is a major diagnostic sign of schizophrenia, when organic mental disorders have been excluded. [19]
This is a list of mental disorders as defined in the DSM-IV, the fourth edition of the Diagnostic and Statistical Manual of Mental Disorders.Published by the American Psychiatry Association (APA), it was released in May 1994, [1] superseding the DSM-III-R (1987).
Schizophrenia is a mental disorder [17] [7] characterized variously by hallucinations (typically, hearing voices), delusions, disorganized thinking and behavior, [10] and flat or inappropriate affect. [7] Symptoms develop gradually and typically begin during young adulthood and are never resolved.
The dopamine hypothesis of schizophrenia or the dopamine hypothesis of psychosis is a model that attributes the positive symptoms of schizophrenia to a disturbed and hyperactive dopaminergic signal transduction. The model draws evidence from the observation that a large number of antipsychotics have dopamine-receptor antagonistic effects. The ...
A thought disorder (TD) is a disturbance in cognition which affects language, thought and communication. [1] [2] Psychiatric and psychological glossaries in 2015 and 2017 identified thought disorders as encompassing poverty of ideas, paralogia (a reasoning disorder characterized by expression of illogical or delusional thoughts), word salad, and delusions—all disturbances of thought content ...
Less extreme forms of DDM, for instance apathy or anhedonia, can be a symptom of psychiatric disorders and related conditions, like depression, schizophrenia, or drug withdrawal. [ 4 ] [ 3 ] [ 1 ] [ 5 ] More extreme forms of DDM, for instance severe apathy, abulia, or akinetic mutism, can be a result of traumatic brain injury (TBI), stroke , or ...
Simple-type schizophrenia is a sub-type of schizophrenia included in the International Classification of Diseases , [1] in which it is classified as a mental and behaviour disorder. [2] It is not included in the current Diagnostic and Statistical Manual of Mental Disorders ( DSM-5 ) or the upcoming ICD-11 , [ 3 ] effective 1 January 2022. [ 4 ]
In schizophrenia, asociality is one of the main five "negative symptoms", with the others being avolition, anhedonia, reduced affect, and alogia. Due to a lack of desire to form relationships, social withdrawal is common in people with schizophrenia.