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      Severity and frequency of restless legs syndrome in patients with familial Mediterranean fever

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          Abstract

          Objective:

          Restless legs syndrome (RLS) is a common sensory motor disorder. RLS an urge to move the extremities that may be accompanied by dysesthesias, and significantly affects quality of life of affected patients. The frequency of RLS is higher in different systemic inflammatory diseases. Familial Mediterranean fever (FMF) is an inherited inflammatory disease characterized by attacks of polyserositis, arthritis, and fever. The prevalence of RLS in patients with FMF is unknown. This study aimed to evaluate the prevalence rate of RLS in a sample of patients with FMF and compare this prevalence with that of a matched normal population.

          Method:

          A total of 60 patients with FMF and 60 healthy controls were studied. All participants underwent a neurological examination. Diagnostic criteria as proposed by the International Restless Legs Syndrome Study Group (IRLSSG) were used to define RLS. The IRLSSG rating scale for the severity of RLS was applied to determine the severity of symptoms.

          Results:

          The prevalence of RLS was not significantly different between patients and controls. Although the mean International Restless Legs Syndrome Rating Scale (IRLSRS) scores tended to be higher in patients compared with controls, this difference was not significant. When each item of the severity scale was compared between the two groups, significantly higher scores were found in some items of the IRLSRS in patients with FMF compared with controls.

          Conclusion:

          According to this result, RLS symptoms in patients with FMF were more frequent and lasted longer than those in controls.

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          Most cited references36

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          Restless legs syndrome: diagnostic criteria, special considerations, and epidemiology. A report from the restless legs syndrome diagnosis and epidemiology workshop at the National Institutes of Health.

          Richard Allen, Daniel Picchietti, Wayne Hening … (2003)
          Restless legs syndrome is a common yet frequently undiagnosed sensorimotor disorder. In 1995, the International Restless Legs Syndrome Study Group developed standardized criteria for the diagnosis of restless legs syndrome. Since that time, additional scientific scrutiny and clinical experience have led to a better understanding of the condition. Modification of the criteria is now necessary to better reflect that increased body of knowledge, as well as to clarify slight confusion with the wording of the original criteria. The restless legs syndrome diagnostic criteria and epidemiology workshop at the National Institutes of Health. Members of the International Restless Legs Syndrome Study Group and authorities on epidemiology and the design of questionnaires and scales. To modify the current criteria for the diagnosis of restless legs syndrome, to develop new criteria for the diagnosis of restless legs syndrome in the cognitively impaired elderly and in children, to create standardized criteria for the identification of augmentation, and to establish consistent questions for use in epidemiology studies. The essential diagnostic criteria for restless legs syndrome were developed and approved by workshop participants and the executive committee of the International Restless Legs Syndrome Study Group. Criteria were also developed and approved for the additional aforementioned groups.
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            Validation of the International Restless Legs Syndrome Study Group rating scale for restless legs syndrome.

            (2003)
            There is a need for an easily administered instrument which can be applied to all patients with restless legs syndrome (RLS) to measure disease severity for clinical assessment, research, or therapeutic trials. The pathophysiology of RLS is not clear and no objective measure so far devised can apply to all patients or accurately reflect severity. Moreover, RLS is primarily a subjective disorder. Therefore, a subjective scale is at present the optimal instrument to meet this need. Twenty centers from six countries participated in an initial reliability and validation study of a rating scale for the severity of RLS designed by the International RLS study group (IRLSSG). A ten-question scale was developed on the basis of repeated expert evaluation of potential items. This scale, the IRLSSG rating scale (IRLS), was administered to 196 RLS patients, most on some medication, and 209 control subjects. The IRLS was found to have high levels of internal consistency, inter-examiner reliability, test-retest reliability over a 2-4 week period, and convergent validity. It also demonstrated criterion validity when tested against the current criterion of a clinical global impression and readily discriminated patient from control groups. The scale was dominated by a single severity factor that explained at least 59% of the pooled item variance. This scale meets performance criteria for a brief, patient completed instrument that can be used to assess RLS severity for purposes of clinical assessment, research, or therapeutic trials. It supports a finding that RLS is a relatively uniform disorder in which the severity of the basic symptoms is strongly related to their impact on the patient's life. In future studies, the IRLS should be tested against objective measures of RLS severity and its sensitivity should be studied as RLS severity is systematically manipulated by therapeutic interventions.
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              Innate immunity and inflammation in ageing: a key for understanding age-related diseases

              Federico Licastro, Giuseppina Candore, Domenico Lio … (2005)
              The process of maintaining life for the individual is a constant struggle to preserve his/her integrity. This can come at a price when immunity is involved, namely systemic inflammation. Inflammation is not per se a negative phenomenon: it is the response of the immune system to the invasion of viruses or bacteria and other pathogens. During evolution the human organism was set to live 40 or 50 years; today, however, the immune system must remain active for much a longer time. This very long activity leads to a chronic inflammation that slowly but inexorably damages one or several organs: this is a typical phenomenon linked to ageing and it is considered the major risk factor for age-related chronic diseases. Alzheimer's disease, atherosclerosis, diabetes and even sarcopenia and cancer, just to mention a few – have an important inflammatory component, though disease progression seems also dependent on the genetic background of individuals. Emerging evidence suggests that pro-inflammatory genotypes are related to unsuccessful ageing, and, reciprocally, controlling inflammatory status may allow a better chance of successful ageing. In other words, age-related diseases are "the price we pay" for a life-long active immune system: this system has also the potential to harm us later, as its fine tuning becomes compromised. Our immune system has evolved to control pathogens, so pro-inflammatory responses are likely to be evolutionarily programmed to resist fatal infections with pathogens aggressively. Thus, inflammatory genotypes are an important and necessary part of the normal host responses to pathogens in early life, but the overproduction of inflammatory molecules might also cause immune-related inflammatory diseases and eventually death later. Therefore, low responder genotypes involved in regulation of innate defence mechanisms, might better control inflammatory responses and age-related disease development, resulting in an increased chance of long life survival in a "permissive" environment with reduced pathogen load, medical care and increased quality of life.
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                Author and article information

                Journal
                Journal ID (nlm-ta): J Int Med Res
                Journal ID (iso-abbrev): J. Int. Med. Res
                Journal ID (publisher-id): IMR
                Journal ID (hwp): spimr
                Title: The Journal of International Medical Research
                Publisher: SAGE Publications (Sage UK: London, England )
                ISSN (Print): 0300-0605
                ISSN (Electronic): 1473-2300
                Publication date (Electronic): 12 June 2017
                Publication date (Print): August 2017
                Volume: 45
                Issue: 4
                Pages: 1340-1346
                Affiliations
                [1 ]Department of Neurology, Cumhuriyet University School of Medicine, Sivas, Turkey
                [2 ]Department of Physical Medicine and Rehabilitation Cumhuriyet University School of Medicine, Sivas, Turkey
                Author notes
                [*]Hatice Balaban, Eğriköprü Mah, 17. Sok, No 3B/1, 58140 Sivas, Turkey. Email: haticebalaban@ 123456yahoo.com
                Article
                Publisher ID: 10.1177_0300060517704789
                DOI: 10.1177/0300060517704789
                PMC ID: 5625534
                PubMed ID: 28606022
                SO-VID: 8c485b1d-7fc9-4f0f-9390-43546fca8253
                Copyright © © The Author(s) 2017
                License:

                This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License ( http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages ( https://us.sagepub.com/en-us/nam/open-access-at-sage).

                History
                Date received : 27 June 2016
                Date accepted : 15 March 2017
                Categories
                Subject: Research Reports

                Keywords: familial mediterranean fever,restless legs syndrome,association
                Data availability:
                Keywords: familial mediterranean fever, restless legs syndrome, association

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