The Clinical journal of pain
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Comparative Study Clinical Trial
Factors predicting pain reduction in chronic back and neck pain after multimodal treatment.
To determine whether treatment related pain reduction on the short- and long-term is predicted by different baseline variables, and with different accuracy, in patients with chronic low back pain as compared with those with chronic neck pain. ⋯ Patients who reported unchanged or increased pain after multimodal treatment could be predicted with good accuracy, whereas those who reported decreased pain were more difficult to identify. Treatment-related pain alteration in chronic low back pain seems to be predicted by partly different variables than in chronic neck pain.
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Comparative Study Clinical Trial
Prognosis of multifactorial outcome in lumbar discectomy: a prospective longitudinal study investigating patients with disc prolapse.
Although previous research has shown that certain medical data and psychosocial factors predict postoperative pain, it remains unclear whether they also contribute to a more distinct outcome measure that is based on classification of self-reported outcome criteria. To assess the prognostic power of somatic, psychologic, and social predictors when evident outcome criteria of surgical treatment are investigated, this study used a prospective longitudinal design examining preoperative factors associated with outcome six months after lumbar discectomy. ⋯ Classification of patients regarding their individual outcome profiles showed that patients responded differently to lumbar disc-surgery. High risk factors for poor outcome of surgery are Laseque-sign and depression.
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To provide insights into the mechanisms underlying central hypersensitivity, review the evidence on central hypersensitivity in chronic pain after whiplash injury, highlight reflections on the clinical relevance of central hypersensitivity, and offer a perspective of treatment of central hypersensitivity. ⋯ Central hypersensitivity may explain exaggerated pain in the presence of minimal nociceptive input arising from minimally damaged tissues. This could account for pain and disability in the absence of objective signs of tissue damage in patients with whiplash. Central hypersensitivity may provide a common neurobiological framework for the integration of peripheral and supraspinal mechanisms in the pathophysiology of chronic pain after whiplash. Therapy studies are needed.
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Review Comparative Study
Is there a relationship between nonorganic physical findings (Waddell signs) and secondary gain/malingering?
This is a structured evidence based review of all available studies addressing the concept of nonorganic findings (Waddell signs) and their potential relationship to secondary gain and malingering. The objective of this review is to determine what evidence, if any, exists for a relationship between Waddell signs and secondary gain and malingering. Waddell signs are a group of 8 physical findings divided into 5 categories, the presence of which has been alleged at times to indicate the presence of secondary gain and malingering. ⋯ Overall, 75% of these reports reported no association between Waddell signs and the 4 possible methods of identifying patients with secondary gain and/or malingering. Based on the above results, it was concluded that there was little evidence for the claims of an association between Waddell signs and secondary gain and malingering. The preponderance of the evidence points to the opposite: no association.
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This paper provides a philosophical, historical, and clinical analysis of exaggerated pain behavior, focusing on the nature of the standards used to judge behavior as exaggerated. Malingering is understood as a special case of exaggerated pain behavior. Drawing upon the work of philosopher Ludwig Wittgenstein and psychiatrist-anthropologist Horacio Fabrega, I argue that these standards are primarily moral rather than scientific in nature. ⋯ The highly variable relation between clinical pain and tissue damage, as well as the common problem of medically unexplained physical symptoms in primary care, pose serious challenges to this strategy of illness behavior validation. It will remain necessary to triage suffering presented to health care providers into that which should be addressed in the medical setting and that which is better addressed elsewhere. But we need to discard pseudoscientific reliance on medical tests and develop new standards that are openly acknowledged to be moral and social in nature.