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Dopamine supersensitivity may be caused by the dopamine receptor D 2 antagonizing effect of antipsychotics, causing a compensatory increase in D 2 receptors within the brain that sensitizes neurons to endogenous release of the neurotransmitter dopamine. Because psychosis is thought to be mediated—at least in part—by the activity of dopamine ...
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 ...
To make a diagnosis of schizophrenia other possible causes of psychosis need to be excluded. [176]: 858 Psychotic symptoms lasting less than a month may be diagnosed as brief psychotic disorder, or as schizophreniform disorder. Psychosis is noted in Other specified schizophrenia spectrum and other psychotic disorders as a DSM-5 category.
Bipolar disorder is a serious mental health condition affecting 2.8 percent of adults in the United States. It involves episodes of mania (extreme highs) and depression (intense lows ...
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.
The treatment varies by the type of the EPS, but may involve anticholinergic agents such as procyclidine, benztropine, diphenhydramine, and trihexyphenidyl. Certain medications such as dopamine agonists are not used, as they may worsen psychotic symptoms to those taking neuroleptic drugs.
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