Pain medicine : the official journal of the American Academy of Pain Medicine
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Neuropathic pain (NP) is a very frequent and unrecognized condition in clinical practice. Therefore, it is important to have a reliable instrument to assess pain subtypes in various cultures. The Leeds Assessment of Neuropathic Symptoms and Signs (LANSS) has been widely used and validated in many countries. Up to now, there has been no reliability study of this instrument in Brazil. ⋯ This LANSS version was found to be a reliable instrument for the evaluation of pain complaints due to a variety of causes. The profile of pain scores was similar to that observed in other countries.
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The aim of this study was to validate the Pain Impact Questionnaire (PIQ-6) for Portuguese adults with a chronic pain condition. ⋯ The PIQ-6 proved to be equivalent in both cultures (American/Portuguese), and is useful, reliable, and valid for use in Portugal.
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The physiological sensation of pain and rapid response to stimuli serve as an adaptive way to avoid harmful situations. Our purpose was to investigate why this protection disappears or almost disappears for patients with congenital indifference to pain (CIP). ⋯ We speculate that the mutations may be the cause of partial deletion of pain perceptionin in our probands, and the novel polymorphism V1104L may have a predictive role in the pain sensation of healthy individuals.
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To compare differences in the prevalence and the anatomical localization of the referred pain areas of active trigger points (TrPs) in head and neck musculature between adults and children with chronic tension-type headache (CTTH). ⋯ This study showed that the referred pain elicited from active TrPs shared similar pain patterns as spontaneous CTTH in adults and children. Differences in TrP prevalence and location of the referred pain areas can be observed between adults and children with CTTH.
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Randomized Controlled Trial
Randomized double-blind sham-controlled crossover study of short-term effect of percutaneous electrical nerve stimulation in neuropathic pain.
Percutaneous electrical nerve stimulation (PENS) is an electrical neuromodulation technique that has shown its therapeutic potential in various chronic pain conditions over the past few years, but well-blinded controlled studies are lacking. ⋯ PENS therapy appears to be effective in providing short-term pain relief in chronic pain conditions. Studies, involving larger sample sizes and longer follow-up are recommended.