Current rheumatology reports
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Various peripheral and spinal mechanisms have been hypothesized to contribute to pain amplification and chronicity. However, the role of the brain in chronic pain states remains to be fully elucidated. Functional brain imaging techniques, such as positron emission tomography and functional magnetic resonance imaging, have frequently been used to investigate brain activity during acute/experimental pain perception, which has helped to establish the notion of the human pain network. ⋯ It has been suggested that prolonged nociceptive input to the brain might induce functional and morphologic maladaptive processes that in turn further exacerbate the experience of chronic pain. Alternatively, morphologic changes might predispose toward vulnerability to develop a chronic pain state. The purpose of this review is to examine current literature regarding altered brain morphology in patients with various chronic pain states, summarize these findings, and evaluate their implications for our understanding of the pathophysiology of chronic pain.
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Vitamin D deficiency is highly prevalent and is increasingly thought to be an important risk factor in many diseases that have high morbidity and mortality, including lupus. Vitamin D is an immunomodulatory hormone with effects on T cells, B cells, and dendritic cells. ⋯ Recommendations are available regarding screening for and repletion of vitamin D deficiency. More research is needed to understand the role of vitamin D as an immunomodulator and to determine the optimal range of serum 25-hydroxyvitamin D for musculoskeletal, cardiovascular, and immune health.
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The continued need for opioids to treat pain and their unavoidable link to abuse and addiction create a need for risk mitigation approaches that optimize their risk-benefit ratio. Abuse-deterrent formulations (ADFs) have emerged as a means for supporting opioid access while limiting abuse and its consequences. ⋯ Each of these types has the potential to reduce specific forms of prescription opioid abuse. ADFs have the potential to reduce the public health burden of prescription opioid abuse, but they will require not only technically successful formulations, but also appropriate scientific assessment, widespread market penetration, and rational expectations of their benefits.
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Acupuncture (AP) is effective for the treatment of postoperative and chemotherapy-induced nausea/vomiting and for postoperative dental pain. Several recent randomized trials have provided strong evidence for beneficial AP effects on chronic low-back pain and pain from knee osteoarthritis. For many other chronic pain conditions, including headaches, neck pain, and fibromyalgia, the evidence supporting AP's efficacy is less convincing. ⋯ Thus, some of the long-term effects of AP analgesia cannot be explained by placebo mechanisms. Furthermore, it appears that some forms of AP are more effective for providing analgesia than others. Particularly, electro-AP seems best to activate powerful opioid and non-opioid analgesic mechanisms.
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Interstitial lung disease (ILD) is a leading cause of death in systemic sclerosis (SSc). Two randomized controlled trials recently demonstrated the modest effects of cyclophosphamide on lung physiology (forced vital capacity) and extrapulmonary outcomes (dyspnea, function, quality of life, and skin thickening). Recommendations can now be made about the short-term management for SSc-ILD. However, many questions remain unanswered, including how long to treat with cyclophosphamide; whether patients should take maintenance therapy after the initial or induction phase; whether there are alternative therapies; how to treat patients with ILD and pulmonary hypertension; and how to treat patients with severe ILD.