Current pain and headache reports
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With the aging of the baby boomer generation, the number of patients with osteoarthritis (OA) is expected to swell, posing treatment challenges. Viscosupplementation, in which hyaluronic acid (HA) is injected into the knee joint, has evolved into an important part of our current therapeutic regimen in addressing the patient with knee pain due to OA. Although suffering from lack of an "evidence-based" approach, and largely funded by industry, there is a growing body of outcome data demonstrating the efficacy of HA in decreasing pain and improving function in patients with knee OA, although no evidence indicates that HA is in any way chondroprotective. The clinical success of HA has led to the ongoing introduction of various forms of HA, although little data are available to justify one over the other.
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Curr Pain Headache Rep · Dec 2009
ReviewEnhanced pain perception in rheumatoid arthritis: novel considerations.
Enhanced pain perception is common among patients with rheumatoid arthritis (RA). Given the putative role of proinflammatory cytokines in the development of hyperalgesia, a greater understanding of factors that facilitate increased cytokine expression in RA stands to increase understanding of the sources of enhanced pain perception. Patients with RA have significantly greater stress-induced proinflammatory cytokine release. ⋯ Parasympathetic insufficiency has also been demonstrated, which may enhance pain perception indirectly through disinhibited cytokine expression. Several psychological variables have also been demonstrated to affect pain perception in patients with RA. Identification of factors that contribute to enhanced pain perception in RA may aid in the development of novel analgesic strategies that, in turn, may decrease disease activity and improve general clinical outcomes.
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Curr Pain Headache Rep · Dec 2009
ReviewTension-type headache with medication overuse: pathophysiology and clinical implications.
Tension-type headache (TTH) is the most prevalent primary headache disorder. An important factor in the long-term prognosis of TTH is the overuse of acute medications used to treat headache. There are many reasons why patients with TTH overuse acute medications, including biobehavioral influences, dependency, and a lack of patient education. ⋯ A proper diagnosis is essential for the treatment of these patients. Treatment should include pathological considerations concerning TTH and MOH, which include peripheral and central mechanisms. Because TTH with MOH carries the worst prognosis, more clinical studies focusing on the complex interaction and treatments of TTH and MOH are needed.
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Curr Pain Headache Rep · Dec 2009
ReviewUpdate on the management of pain in arthritis and the use of cyclooxygenase-2 inhibitors.
Chronic pain from arthritis continues to be one of the biggest causes of disability and loss of function in the United States today. This is still the case despite many new insights into the pathophysiology of pain, effective treatment approaches, and new, safer medications that can be used long-term. There are many different types of arthritic problems. ⋯ To complicate treatment for this condition, the most widely used group of medications is under new scrutiny because of concerns regarding long-term detrimental side effects. A complete understanding of the risk factors for NSAIDs, specifically cyclooxygenase-2 inhibitors, is still not available. But published data and new clinical guidelines still suggest that treatment for this large category of diseases can be effective and safe.
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Curr Pain Headache Rep · Dec 2009
ReviewAdvances in the pathophysiology of tension-type headache: from stress to central sensitization.
Tension-type headache (TTH) is the most common and most socioeconomically costly headache. Yet our knowledge regarding TTH pathophysiological mechanisms is still in its early stages. ⋯ The conversion from ETTH to CTTH is most relevant to the clinician and the patient, as CTTH is the most debilitating. This paper focuses and summarizes our current understanding of central sensitization, the process by which this conversion occurs in TTH, and proposes an integrated model to explain how ETTH progresses into CTTH in genetically susceptible individuals.