Analyzing Psychological Disorders Schizophrenia, Anorexia Nervosa and Anxiety

2362 Words Jun 28th, 2011 10 Pages
Introduction The biopsychologist will implement the biological approach to psychology in the attempt to study psychological diseases and disorders as well as in the diagnosis and treatment of individual’s suffering from such diseases and disorders. The following will include the analysis of the disorder known as Schizophrenia. The areas of brain affected, causal factors, associated symptoms, neural basis and appropriate drug therapies will be discussed. In addition, the disorders of Anorexia Nervosa and Generalized Anxiety Disorder will also be examined. Both the disorders of Anorexia Nervosa and Generalized Anxiety Disorder will be discussed for their relation to the nature-nurture issue and other appropriate theories of etiology. …show more content…
In addition, those with the genetic predisposition for Schizophrenia often show evidence which suggest neurodevelopment hindrances related to early infection, autoimmune reactions and toxin exposure which may increase the likelihood of developing the disorder (Pinel, 2007). Alternate theory suggests Schizophrenia to have a connection to increased dopamine levels. Specific attention has been drawn to the D2 receptors. Research findings involving phenothiazines which bind to both D1 and D2 receptors and butyrophenones which bind only to the D2 receptors support that Schizophrenia is possibly caused by hyperactivity at the D2 receptor site and not dopamine receptor sites in general (Pinel, 2007). Although research related to the D2 receptor is substantive, the neural basis of the disorder may aid in further understanding of Schizophrenia (Pinel, 2007). More recent research implies Schizophrenia to have a connection with more than the D2 receptors. Atypical neuroleptic drugs, which are not primary blockers of the D2 receptors, such as clozapine show only slight effect on the D2 receptors but increased effect on other receptors including the D1 and D4 receptors as well as multiple serotonin receptors (Pinel, 2007). In addition, the fact that neuroleptic drug therapy requires several weeks to alleviate the symptoms of Schizophrenia while effectively blocking the activity at the D2 receptors within only hours suggests blocking these receptors is

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