The Clinical journal of pain
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What is the role of psychological factors in chronic pain and chronic pain disability? ⋯ Because of the small number of studies, there was inadequate evidence that chronic pain results from a prior psychiatric disorder (level 4a). The studies provided limited evidence (level 3) that chronic depression plays a role in the development of new pain locations (although not for low back pain); that prior nervousness and past negative life events predict work disability; and that depression, anxiety, and a sense that control rests outside of one's own self may predict slower recovery from pain and disability. These findings do not prove that psychological factors have a role in the development of chronic pain. Psychological impairment may precede the onset of pain. Based on current knowledge, it may also arise as a complication of chronic pain.
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The purpose of this review was to determine how effective exercise is in the treatment of chronic pain. ⋯ Exercise is effective for the management of chronic low back pain for up to 1 year after treatment and for fibromyalgia syndrome for up to 6 months (level 2). There is conflicting evidence (level 4b) about which exercise program is effective for chronic low back pain. For chronic neck pain and for chronic soft tissue shoulder disorders and chronic lateral epicondylitis, evidence of effectiveness of exercise is limited (level 3).
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Review Meta Analysis
Gabapentin for neuropathic pain: systematic review of controlled and uncontrolled literature.
To assess the efficacy/effectiveness and side effects of gabapentin for the treatment of neuropathic pain. ⋯ Gabapentin seems to be effective in multiple painful neuropathic conditions. The variable prescribing patterns of the uncontrolled studies raise the suspicion that effectiveness may be reduced if one limits administration of the drug to very low doses, whereas rapid dose escalation may be associated with increased central nervous system side effects. Well-designed controlled trials may provide insight into differential symptom sensitivity to the drug.
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Disability is a multifactorial phenomenon. Social scientists suggest that nonclinical factors, including age, education, and job status, correlate with disability. ⋯ Lack of modified work and lack of work autonomy predicted chronic pain disability (level 2). There was limited evidence (level 3) that lack of job satisfaction, perception of difficult job conditions and demands, heavy physical demands of the job, private rather than public employment, and lower socioeconomic group predict chronic pain disability. The number of years employed varied as a predictor in different studies (level 4b).
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With an increasing prevalence of low back pain, management can include modified work, work-conditioning, or work-hardening programs. Modified work programs, or employer's worksite interventions or clinic-based programs under medical supervision, provide a gradual increase of workload. Work-conditioning programs, or unimodal physical conditioning and function activities, promote return to work. Work-hardening programs, or graded work simulations and psychological interventions, are used as part of an interdisciplinary program addressing physical and functional needs. ⋯ Modified work programs may improve return-to-work rates of workers with work-related injuries for 6 months or longer (level 2). There is inadequate evidence (level 4a) to determine what particular aspects of modified work programs are helpful. Work conditioning and work hardening may or may not improve the return to work of more chronically disabled workers (level 4b).