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The link between chronic pain and depression is still disputed. Studies investigating this link have failed to solve this dispute completely. The authors examined articles that showed studies of depression in patients with chronic pain. Data roughly supports the theory of the link between chronic pain and depression and also shows that pain and depression may be caused by different influences coming together. This article discusses common problems in the concept and methods used to investigate this illness. Lastly, the article reports the different theories for the link between chronic pain and depression. These theories are both biological and psychological. Suggestions for future research in this topic are also made.
View the original chronic pain and depression study at this link: Chronic Pain and Depression: Does the Evidence Support a Relationship?