Biological Causes of Schizophrenia .docx

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Running head: BIOLOGICAL CAUSES OF SCHIZOPHRENIA 1 Biological Causes of Schizophrenia Schizophrenia is an organic disorder classified under psychotic disorders because of its specific symptoms associated with psychosis: delusions, hallucinations, and disorganized thinking (Preston, O'Neal, & Talaga, 2017). The disorder often manifests in young adults, it encompasses three phases, and at complete onset, the disorder has a traumatic, functional impact in all areas of an individual’s life (Julien, Advokat, & Comaty, 2014). While the exact cause of schizophrenia is still unknown, there have been several theories as to the etiology of the disorder. The initial theory and most widely resumed during the 20 th century was the Dopamine Model (Preston et al., 2017). The brain has an abundance of dopamine receptors throughout, and the dopamine model posits that the disorder is a result of overactive dopamine receptors. Observations have shown that effective antipsychotics are strong dopamine blockers, they bind to the D2 receptors on the postsynaptic neuron (Preston et al., 2017). In addition to the blocking
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