Articles: chronic-pain.
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Chronic headache is a significant medical and socioeconomic problem resulting in severe disability and impairment. The term "cervicogenic headache" was coined by Sjaastad in 1983, who also proposed criteria for its diagnosis. Cervicogenic headache as described by Sjaastad et al is characterized as recurrent, long lasting, severe unilateral headache arising from the neck. ⋯ Because of the numerous potential pain generators, neither uniform clinical findings, nor a pathophysiology has been defined for the entity known as cervicogenic headache. Sequential diagnostic injections may elucidate pain generators and differentiate it from other types of headaches. This review describes the epidemiological and clinical aspects of cervicogenic headache, pathophysiology, diagnostic strategies to differentiate it from other common headaches and describes various non-operative treatment strategies.
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This paper reviews data supporting the existence of individual, predictable, and unpredictable fluctuations in the severity of chronic pain and spasticity. It also evaluates what is known on the use of implantable programmable drug delivery systems for the management of predictable fluctuations in pain and spasticity. In addition to fixed rate infusion pumps, programmable drug delivery systems have been developed over the past 20 years for the management of predictable pain or spasticity fluctuations. ⋯ Ideally, the patient should be able to treat unpredictable fluctuations in symptoms, and a combination of patient controlled analgesia (PCA) with programmable drug delivery systems is currently in development. The future management of unpredictable fluctuations in the intensity of chronic pain and spasticity was subjected to critical evaluation. There seems to be a general agreement on the clinical importance of these phenomena, but stronger evidence is needed for a widespread change in the current management of most chronic pain patients.
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The illness behavior questionnaire (IBQ) is a test battery developed by Pilowsky to detect what he has termed abnormal illness behavior, which includes malingering. The IBQ has been widely utilized in patients with chronic pain (PWCP). Clayer developed a 21-item scale out of the IBQ, which he termed the conscious exaggeration (CE) scale. He proposed that the CE scale could detect conscious deception, i.e., malingering. The purpose of the present study is to test the CE scale in PWCP alleged to have secondary gain and thereby at greater risk for poor pain treatment outcome. It was postulated that the CE scale should generate scores in these groups significantly different from a comparison group and should predict treatment outcome in the secondary gain groups. ⋯ PWCP characterized by the alleged secondary gain variables of Workers' compensation status, litigation, and having a lawyer did not differentially respond to the CE scale versus the comparison group. The CE scale, therefore, does not appear to be a valid instrument for identifying exaggeration in PWCP.
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Around-the-clock (ATC) dosing of opioid analgesics is the established approach for the management of chronic cancer pain. The purposes of this study were to determine whether there were differences in pain intensity scores and pain duration between oncology outpatients who were taking opioid analgesics on an around-the-clock (ATC) compared with an as needed (PRN) basis and to determine differences in opioid prescription and consumption between the 2 groups during a period of 5 weeks. Oncology patients (n = 137) with pain from bone metastasis were recruited from 7 outpatient settings. ⋯ No significant differences in average, least, or worst pain intensity scores or number of hours per day in pain were found between the 2 groups. However, the average total opioid dose, prescribed and taken, was significantly greater for the ATC group than for the PRN group. These findings suggest the need for further investigations in the following areas: the appropriate treatments for pain related to bone metastasis, the use of various pain measures to evaluate the effectiveness of analgesic medications, and the need to evaluate how analgesics are prescribed and titrated for patients with cancer-related pain.
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Epidural steroid injections are the most commonly used procedures to manage chronic low back pain in interventional pain management settings. The overall effectiveness of epidural steroid injections has been highly variable, and in the role has not been evaluated in patients discographically evaluated. One hundred consecutive patients, without evidence of disc herniation or radiculitis, who had failed to respond to conservative management with physical therapy, chiropractic and/or medical therapy, underwent discography utilizing strict criteria of concordant pain, and negative adjacent discs, after being judged to be negative for facet joint and/or sacroiliac joint pain utilizing comparative local anesthetic blocks. ⋯ The study showed that at 1 month, 100% of the patients evaluated showed significant improvement in both groups; this declined to 86% at 3 months in Group I, but remained at 100% in Group II, declining to 60% and 64% at 6 months in Group I and Group II, respectfully, with administration of one to three injections. Analysis with one to three injections, which included all (62) patients showed significant relief in 71% and 65% of the patients at 1 month, in 67% and 65% at 3 months, and in 47% and 41% at 6 months, in Group I and Group II, respectively. In conclusion, caudal epidural injections with or without steroids is an effective modality of treatment in managing chronic, persistent low back pain failing to respond to conservative modalities of treatments, in patients negative for facet joint and sacroiliac joint pain, whether positive or negative, on evaluation with provocative discography.