Pain management
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SUMMARY At early stages, complex regional pain syndrome (CRPS) is clinically characterized by damage of peripheral tissues and nerves (edema, activation of osteoblasts, hyperalgesia to blunt pressure). These signs are the result of a dysbalance of pro- and anti-inflammatory cytokines, which normalizes approximately 6 months after the beginning of the disease, independent from clinical outcome. At the same time, evolving clinical signs such as allodynia, cold hyperalgesia, reduced tactile acuity or symptoms of disrupted body representation (e.g., neglect-like syndrome, impaired hand laterality recognition or shift of the body midline) suggest a crucial role of the CNS in the pathophysiology of this pain syndrome. ⋯ Furthermore, despite its unilateral clinical manifestation, it has been shown that in CRPS but not in other unilateral neuropathic pain syndromes, alterations in cortical excitability occur bilaterally, both in sensory and motor regions. In conclusion, a more widespread and bilateral pattern of CNS reorganization appears to characterize CRPS, which might be related to dysfunctions in the basal ganglia or in thalamo-cortical structures. Consequently, CRPS treatment should involve not only anti-inflammatory measures and pain therapy, but also the integration of neurorehabilitative training programs.
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SUMMARY Neuropathic pain is a complex pain syndrome that remains difficult to treat. Patients fail to obtain satisfactory relief despite receiving pharmacological agents. ⋯ Preventative, nonpharmacological and pharmacological treatments are suggested in the management of neuropathic pain. Interventional options, such as spinal cord stimulation, intrathecal drug delivery, intravenous infusions therapies, and sympathetic nerve block, should be considered in patients with refractory neuropathic pain.
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SUMMARY ⋯ Study findings suggest differences by ethnicity in preferred pain interventions for an older adult population.
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Stein Kaasa, MD, speaks to Dominic Chamberlain, Assistant Commissioning Editor: Stein Kaasa specializes in oncology and palliative medicine. In 1993 he was appointed as the first professor in palliative medicine in Scandinavia and he was one of the founders of the palliative care unit in Trondheim (Norway). He also was the founder of the European Palliative Care Research Centre. ⋯ Professor Kaasa has published more than 450 articles and book chapters. He has authored the Nordic Textbook of Palliative Care and is coauthor and editor of the Oxford Textbook of Palliative Medicine. Professor Kaasa advises many international journals - either as an advisory board member or as a reviewer (Journal of Pain and Symptom Management, Palliative Medicine, Journal of Palliative Medicine, Oncology, Journal of Clinical Oncology, Pain and The Lancet Oncology).