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A Dimensional Approach to Depression and Anxiety

 

Mood disorders are split into bipolar and unipolar disorders. Unipolar disorders contain major depression and dysthymic disorder and bipolar disorders contain Bipolar 1, Bipolar 2 and Cyclothymia. Anxiety disorders include Panic Disorder, agoraphobia, Specific Phobia, Social Phobia, Generalized Anxiety Disorder, Obsessive Compulsive Disorder, Post Traumatic Stress Disorder, Acute Stress Disorder. .
             Dimensional Proposal.
             To explain the high comorbidity rates and overlapping features of anxiety and depressive symptoms, Clark and Watson proposed the tripartite model. Due to high comorbidity, Watson recommends collapsing the mood and anxiety disorders into one "internalizing " group, emotional disorders, and then spilt the large group into three subgroups Bipolar, General Distress and Fear. The Bipolar group contains Bipolar 1, Bipolar 2 and cyclothymia. The General Distress group contains Major depression, PTSD, GAD and dysthymia (Watson, 2005). The Fear group includes panic disorder, agoraphobia, social phobia and specific phobia. Placement of PTSD is still an issue because PTSD could have a distress basis or a fear basis (Watson, 2005). Watson's model helps explain the comorbidity and underlying constructs. Each disorder is also defined by a specific temperamental component. Increased negative affect and lack of positive affect was related to depression. Hyperarousability was specifically related to anxiety (Chin, Ebesutani & Young, 2013; Watson, 2005). The temperamental dimensions of mood and anxiety disorders help with future research on treatment of these disorders and allow more valid diagnosis. The nature of relationship between depression and anxiety is still a controversy. Some believe they are distinct and independent disorders while some view them as overlapping syndromes that are present on a continuum and share the similar neurobiological factors. .
             Problems with the DSM Categories.


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