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      Miosite benigna aguda da infância: relato de caso Translated title: Benign acute childhood myositis: a case report

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      Revista Portuguesa de Medicina Geral e Familiar
      Associação Portuguesa de Medicina Geral e Familiar
      Miosite, Crianças, Myositis, Children

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          Abstract

          A miosite benigna aguda da infância é uma patologia incapacitante, rara, autolimitada e pouco conhecida pelos profissionais de saúde. Este artigo relata um caso de miosite numa criança de seis anos de idade, com dor na região gemelar e incapacidade para a marcha no contexto de infeção respiratória alta, sem história de traumatismos ou episódios semelhantes no passado. O prognóstico favorável desta manifestação clínica permite o acompanhamento com segurança da maioria dos casos em cuidados de saúde primários, bastando para isso um reconhecimento da patologia por parte dos profissionais

          Translated abstract

          Benign acute childhood myositis (BACM) is an uncommon, disabling, self-limited disease that is relatively unknown by healthcare providers. This article reports a case of BACM in a 6 year-old child who suffered from calf pain and was unable to bear weight after an upper respiratory tract infection. There was no history of trauma and there were no similar episodes in the past. Because of its excellent prognosis, increased awareness by primary care health care providers is needed, to permit safe follow up in most cases

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          Most cited references11

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          Influenza-associated myositis in children.

          Influenza-associated myositis (IAM) is an infrequent and poorly known complication of influenza virus infection in children. The aim of this study was to describe five cases of IAM and to review the literature on IAM in children. We conducted a retrospective analysis of cases of IAM diagnosed at two university children's hospitals in Switzerland during two consecutive influenza seasons. Findings were compared with 39 individual case reports and five publications summarizing an additional 272 cases identified by a medical online library (MEDLINE) search. Overall, 316 cases were analyzed. IAM typically occurred in school-aged children with a 2:1 male predominance. Influenza B and A viruses were identified in 76% and 24% of cases, respectively. The median interval between onset of influenza and onset of IAM was 3 days (range 0-18). The calf muscles were involved alone or together with other muscle groups in 69% and 31% of cases, respectively. Blood creatine phosphokinase (CPK) concentration was invariably elevated. Median duration to clinical recovery was 3 days (range 1-30). Rhabdomyolysis occurred in ten of 316 patients (3%), was more common in girls (80%), more often associated with influenza A (86%), and led to renal failure in eight patients (80%). Clinical and laboratory findings of IAM are highly characteristic and allow a rapid diagnosis during the influenza season.
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            A large outbreak of influenza B-associated benign acute childhood myositis in Germany, 2007/2008.

            Benign acute childhood myositis (BACM) is a rare syndrome associated with various viral infections. Bilateral calve pain may lead to inability to walk. During winter 2007/2008, we investigated a nationwide outbreak of influenza-associated BACM (IA-BACM) to identify etiologic (sub)type, describe the course of disease, and explore how well the syndrome is known among physicians. We performed retrospective and prospective case finding in all German federal states. Physicians returned patient-based questionnaires containing information about sex, age, disease progression, patient-management, and number of BACM cases treated previously. We compared IA-BACM cases with influenza cases from the German virologic sentinel surveillance system for influenza. We investigated 219 children with IA-BACM. They coincided with the curve of influenza B of the German virologic sentinel surveillance system for influenza. Median age was 7 years, 74% (160/216) of cases were male, median time between the onset of fever and onset of BACM-symptoms was 3 days lasting for a median of 4 days. Almost half of the affected children had presented at hospitals. One case with beginning renal impairment occurred, but the patient recovered completely. Most reporting physicians had not seen BACM-patients previously. Multivariable analysis showed IA-BACM's strong association with influenza B, male sex, and age between 6 and 9 years. Influenza B caused a large BACM outbreak in Germany. Onset of BACM symptoms followed shortly after the onset of influenza symptoms. The course of this disease was almost exclusively mild and self-limiting. Diagnosis of this rare but distinct clinical entity by the alert physician can spare the patient potentially unneeded invasive testing and hospital admission.
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              Myalgia Cruris Epidemica

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                Author and article information

                Contributors
                Role: ND
                Journal
                rpmgf
                Revista Portuguesa de Medicina Geral e Familiar
                Rev Port Med Geral Fam
                Associação Portuguesa de Medicina Geral e Familiar (Lisboa, , Portugal )
                2182-5173
                October 2016
                : 32
                : 5
                : 346-348
                Affiliations
                [01] Lisboa orgnameACES Lisboa Norte orgdiv1UCSP de Benfica
                Article
                S2182-51732016000500008
                c12c5013-21a9-4396-a6f2-39f7f1b49007

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 13 April 2016
                : 17 August 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 8, Pages: 3
                Product

                SciELO Portugal


                Miosite,Crianças,Myositis,Children
                Miosite, Crianças, Myositis, Children

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