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      Quality of Life in Painful Peripheral Neuropathies: A Systematic Review

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          Abstract

          Objective

          Neuropathic pain is a common presenting complaint of patients with peripheral neuropathy (PN) and is considered one of the most disabling neuropathic symptoms, with detrimental effects on patients' quality of life (QoL). The aim of this review was to overview the current literature that focuses on QoL in painful PN of various aetiologies. We sought to clarify the direct effect of pain and its treatment on patients' QoL.

          Methodology

          A systematic computer-based literature search was conducted using the PubMed database to search for papers on QoL in painful PN. Information was extracted regarding prevalence, demographics, and response to treatment where relevant.

          Results

          We identified 66 articles eligible for inclusion. The vast majority of studies ( n=47) focused on patients with diabetic PN. Other aetiologies of painful PN where QoL has been studied to date include gluten, immune-mediated, HIV, chemotherapy-induced, and chronic idiopathic axonal polyneuropathy. Pharmacological treatment is the mainstay in managing pain and has a direct positive and independent effect on the overall QoL. Other nonpharmacological approaches can also be of benefit, either alone or as adjuvant treatments, and are discussed.

          Conclusion

          The findings demonstrate that QoL is impaired in painful PN and should not be neglected in clinical practice. Patients' pain management and subsequent impact on QoL should routinely be assessed and monitored.

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          Most cited references68

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          Effect of duloxetine on pain, function, and quality of life among patients with chemotherapy-induced painful peripheral neuropathy: a randomized clinical trial.

          There are no known effective treatments for painful chemotherapy-induced peripheral neuropathy. To determine the effect of duloxetine, 60 mg daily, on average pain severity. Randomized, double-blind, placebo-controlled crossover trial at 8 National Cancer Institute (NCI)-funded cooperative research networks that enrolled 231 patients who were 25 years or older being treated at community and academic settings between April 2008 and March 2011. Study follow-up was completed July 2012. Stratified by chemotherapeutic drug and comorbid pain risk, patients were randomized to receive either duloxetine followed by placebo or placebo followed by duloxetine. Eligibility required that patients have grade 1 or higher sensory neuropathy according to the NCI Common Terminology Criteria for Adverse Events and at least 4 on a scale of 0 to 10, representing average chemotherapy-induced pain, after paclitaxel, other taxane, or oxaliplatin treatment. The initial treatment consisted of taking 1 capsule daily of either 30 mg of duloxetine or placebo for the first week and 2 capsules of either 30 mg of duloxetine or placebo daily for 4 additional weeks. The primary hypothesis was that duloxetine would be more effective than placebo in decreasing chemotherapy-induced peripheral neuropathic pain. Pain severity was assessed using the Brief Pain Inventory-Short Form "average pain" item with 0 representing no pain and 10 representing as bad as can be imagined. Individuals receiving duloxetine as their initial 5-week treatment reported a mean decrease in average pain of 1.06 (95% CI, 0.72-1.40) vs 0.34 (95% CI, 0.01-0.66) among those who received placebo (P = .003; effect size, 0.513). The observed mean difference in the average pain score between duloxetine and placebo was 0.73 (95% CI, 0.26-1.20). Fifty-nine percent of those initially receiving duloxetine vs 38% of those initially receiving placebo reported decreased pain of any amount. Among patients with painful chemotherapy-induced peripheral neuropathy, the use of duloxetine compared with placebo for 5 weeks resulted in a greater reduction in pain. clinicaltrials.gov Identifier: NCT00489411.
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            Pain severity in diabetic peripheral neuropathy is associated with patient functioning, symptom levels of anxiety and depression, and sleep.

            Our goal was to evaluate pain severity, pain-related interference with function, sleep impairment, symptom levels of anxiety and depression, and quality of life among patients with painful diabetic peripheral neuropathy (DPN). Participants in a burden of illness survey (n = 255) completed the modified Brief Pain Inventory-DPN (BPI-DPN), MOS Sleep Scale, Hospital Anxiety and Depression Scale (HADS), Short Form Health Survey-12v2 (SF-12v2), and the EuroQoL (EQ-5D). Patients were 61 +/- 12.8 years old (51.4% female), had diabetes for 12 +/- 10.3 years and painful DPN for 6.4 +/- 6.4 years. Average and Worst Pain scores (BPI-DPN, 0-10 scales) were 5.0 +/- 2.5 and 5.6 +/- 2.8. Pain substantially interfered (>or=4 on 0-10 scales) with walking ability, normal work, sleep, enjoyment of life, mood, and general activity. Moderate to severe symptom levels of anxiety and depression (HADS-A and HADS-D scores >or=11 on 0-21 scales) occurred in 35% and 28% of patients, respectively. Patients reported greater sleep problems compared with the general U.S. population and significant impairment in both physical and mental functioning (SF-12v2) compared with subjects with diabetes. The mean EQ-5D utility score was 0.5 +/- 0.3. Greater pain levels in DPN (mild to moderate to severe) corresponded with higher symptom levels of anxiety and depression, more sleep problems, and lower utility ratings and physical and mental functioning, (all Ps < 0.01). Painful DPN is associated with decrements in many aspects of patients' lives: physical and emotional functioning, affective symptoms, and sleep problems. The negative impact is higher in patients with greater pain severity.
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              Painful diabetic polyneuropathy: epidemiology, pain description, and quality of life.

              A prospective survey study was performed in patients with painful diabetic polyneuropathy (PDN) to assess the nature and scope of their pain. Pain associated with diabetic neuropathy is commonly encountered in clinical practice. Yet, little is known regarding the pain experience and impact on quality of life in persons with painful diabetic neuropathy. These 105 patients noted an average of 6/10 pain, most often described as 'burning', 'electric', 'sharp', and 'dull/ache', which, for most, is worse at night time and when tired or stressed. On average, patients reported that the pain caused substantial interference in sleep and enjoyment of life and moderate interference in recreational activities, normal work, mobility, general activity, social activities, and mood. Unexpectedly, a potential genetic predisposition to the development of painful neuropathy was suggested by the fact that a majority (56%) reported a family member with PDN. Thus, this study found that pain associated with diabetic neuropathy is a significant medical issue that has a substantial impact on the quality of life of many people with this condition.
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                Author and article information

                Contributors
                Journal
                Pain Res Manag
                Pain Res Manag
                PRM
                Pain Research & Management
                Hindawi
                1203-6765
                1918-1523
                2019
                23 May 2019
                : 2019
                : 2091960
                Affiliations
                1The Medical School, University of Sheffield, Sheffield, UK
                2Paolo Procacci Foundation, Via Tacito 7, Roma, Italy
                3Department of MESVA, University of L'Aquila, L'Aquila, Italy
                4Athens Medical Centre, Athens, Greece
                5Medical School, University of Cyprus, Nicosia, Cyprus
                6Academic Department of Neurosciences, Sheffield Teaching Hospitals NHS Trust, Sheffield, UK
                Author notes

                Academic Editor: Marina De Tommaso

                Author information
                http://orcid.org/0000-0002-3822-2923
                http://orcid.org/0000-0001-8567-3092
                Article
                10.1155/2019/2091960
                6556282
                31249636
                49496158-88f3-4aac-97b3-7565e3e7d9ff
                Copyright © 2019 Ayesha Girach et al.

                This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 30 January 2019
                : 18 April 2019
                : 28 April 2019
                Funding
                Funded by: National Institute for Health Research
                Categories
                Review Article

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