The Clinical journal of pain
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A case study was conducted to examine a patient with chronic neuropathic pain of the right foot following peripheral nerve injury and characterize associated sensory abnormalities. ⋯ The profound sensory disturbances suggest a possible deafferentation type of tactile allodynia mediated by changes within the central nervous system, such as a disruption of normal tactile or thermal inhibition of nociception. The functional magnetic resonance imaging data suggest that tactile allodynia is represented in similar brain regions as experimental pain.
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Randomized Controlled Trial Multicenter Study Comparative Study Clinical Trial
The validity of the neuropathic pain scale for assessing diabetic neuropathic pain in a clinical trial.
In controlled trials of analgesics for the treatment of neuropathic pain, the primary outcome variable is most often a measure of global pain intensity. However, because neuropathic pain is associated with a variety of pain sensations, the effects of analgesic treatments on different sensations could go undetected if specific pain qualities are not assessed. This study sought to evaluate the utility of assessing the multiple components of neuropathic pain in an analgesic clinical trial. ⋯ These findings support the utility of the NPS for characterizing the multidimensional nature of the neuropathic pain experience and for detecting changes in neuropathic pain with treatment.
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The concept of rational polypharmacy is now well established in the field of pain management. This concept has evolved in concert with progress in understanding the pathophysiologic mechanisms of pain diseases and disorders and how medications affect these processes. ⋯ This article will review how pain diagnosis, pain mechanisms, pain phenomenology, medication efficacy, and risk profile influence medication selection in pain medicine practice, with a selective focus on the treatment of neuropathic pain. In addition, the role of psychosocial factors as they affect pain management will be discussed.
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Comparative Study
Tunneled epidural catheter infections in noncancer pain: increased risk in patients with neuropathic pain/complex regional pain syndrome.
Tunneled epidural catheters are often used to control pain and facilitate rehabilitation in patients with regional pain syndromes. A cohort retrospective study design was undertaken to evaluate the risk of catheter-related infection in patients who underwent a TEC placement to manage their chronic noncancer regional pain over a 5-year period. ⋯ The higher risk of tunneled epidural catheter infection observed in patients with neuropathic pain (particularly complex regional pain syndrome) warrants further study.
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Comparative Study
Psychometric properties of the mood and anxiety symptom questionnaire in patients with chronic pain.
Previous studies have demonstrated that the Mood and Anxiety Symptom Questionnaire is able to discriminate between depressive and anxious symptoms. Factor analysis of the scale has revealed 3 factors: general distress, positive affect, and physiological hyper-arousal. However, the properties of the Mood and Anxiety Symptom Questionnaire have not been extensively examined in medical populations, in which the measurement of depressive and anxious symptoms is complicated by the presence of comorbid physical symptoms such as pain. Therefore, the purpose of the present study was to evaluate the psychometric properties of the Mood and Anxiety Symptom Questionnaire in patients with chronic pain. ⋯ The results support the utility of the Mood and Anxiety Symptom Questionnaire with samples of patients with chronic pain and provide further support for the tripartite model of anxiety and depression.