Pain
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Comparative Study
Engagement of descending inhibition from the rostral ventromedial medulla protects against chronic neuropathic pain.
A puzzling observation is why peripheral nerve injury results in chronic pain in some, but not all, patients. We explored potential mechanisms that may prevent the expression of chronic pain. Sprague Dawley (SD) or Holtzman (HZ) rats showed no differences in baseline sensory thresholds or responses to inflammatory stimuli. ⋯ Thus, expression of nerve injury-induced pain may ultimately depend on descending modulation. Engagement of descending inhibition protects in the transition from acute to chronic pain. These unexpected findings might provide a mechanistic explanation for medications that engage descending inhibition or mimic its consequences.
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Review Meta Analysis
The population prevalence of foot and ankle pain in middle and old age: a systematic review.
A systematic review and meta-analysis of population-based epidemiological studies was undertaken to determine the prevalence of foot and ankle pain in middle and old age. Searches were conducted in the following electronic databases from inception to October 2010: PubMed, EMBASE, AMED, CINAHL, Cochrane, PEDro, and SportDiscus. Full-text English language articles were included if they used population sample frames, cross-sectional design or analysis, and reported prevalence estimates for foot and/or ankle pain in adults aged 45 years and over. ⋯ Narrative synthesis of evidence from existing studies suggested preponderance in females, an age-related increase in prevalence in women but not men, that the toes/forefoot were the most common anatomical sites of pain, and that moderate disability in an aspect of daily life was reported by two-thirds of cases. This review provides estimates of the community burden of foot and ankle pain in middle and old age. By outlining the scale of this clinical problem, these findings can be used to inform health care planning and provision.
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Randomized Controlled Trial Comparative Study
Randomized trial of group cognitive behavioral therapy compared with a pain education control for low-literacy rural people with chronic pain.
Chronic pain is a common and costly experience. Cognitive behavioral therapies (CBT) are efficacious for an array of chronic pain conditions. However, the literature is based primarily on urban (white) samples. ⋯ Clinical significance of the findings and the number of treatment responders is reported. Overall, these findings indicate that CBT and EDU are viable treatment options in low-SES minority and nonminority groups. Further research should target disseminating and sustaining psychosocial treatment options within underserved populations.
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Adolescents with chronic pain are at risk for impairment in their friendships. They miss out on leisure activities, have increased school absence, may have fewer friends, are at an increased risk for victimization, and may be perceived by peers as less likeable. To help determine the source of these problems, the Social Information Processing Model (SIP) was adapted using narrative vignettes to determine if adolescents with chronic pain interpret friendship interactions differently in terms of supportive and nonsupportive behaviors compared to healthy peers. ⋯ Adolescents with chronic pain may interpret nonsupportive social situations with close friends as more distressing. The endorsement of more supportive behaviors may indicate a need for, and expectation of, supportive behaviors from friends. When adolescents with chronic pain do not perceive friends as providing support, they may avoid these social situations.