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        "titulo" => "Abstract"
        "resumen" => "<span class="elsevierStyleSectionTitle">Objective</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">To review the scientific literature concerning the classification of fibromyalgia &#40;FM&#41;&#44; including previous studies focusing on the gnosologic evaluation of FM&#44; with the aim of proposing a classificatory hypothesis based on the current scientific evidence&#46;</p> <span class="elsevierStyleSectionTitle">Methods</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Systematic review using a baseline MEDLINE search&#46; Search terms included &#8220;fibromyalgia&#8221; and &#8220;classification&#46;&#8221; Additional articles were identified through a comprehensive manual search of the references of retrieved articles&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">This systematic review has identified&#44; on the one hand&#44; several classificatory proposals based on psychopathological aspects&#44; and&#44; on the other hand&#44; the key role of associated diseases&#46; Based on the scientific evidence currently available&#44; the following FM subsets were defined&#58; patients with no associated processes &#40;type I FM&#41;&#44; patients with associated rheumatic&#47;autoimmune chronic diseases &#40;type II FM&#41;&#44; patients with severe psychiatric disorders &#40;type III FM&#41; and patients with simulated FM &#40;type IV FM&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Few studies have specifically analyzed the classification of FM into subgroups with a more homogeneous clinical expression&#46; Correct classification of patients with FM requires the integration of two key concepts &#40;psychopathological evaluation and coexistence of comorbid processes&#41;&#44; with an individual diagnostic evaluation by a multidisciplinary team&#46;</p>"
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        "resumen" => "<span class="elsevierStyleSectionTitle">Objetivo</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Recopilar la informaci&#243;n existente sobre la clasificaci&#243;n de la fibromialgia &#40;FM&#41;&#44; analizar los antecedentes relevantes en relaci&#243;n con una subdivisi&#243;n nosol&#243;gica y proponer una hip&#243;tesis clasificatoria fundamentada en la evidencia cient&#237;fica existente en la actualidad&#46;</p> <span class="elsevierStyleSectionTitle">Metodolog&#237;a</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">Revisi&#243;n sistem&#225;tica de la literatura mediante b&#250;squeda en la p&#225;gina web PubMed&#46; Los t&#233;rminos de b&#250;squeda en MEDLINE fueron &#171;fibromyalgia&#187; y &#171;classification&#187;&#46; Se realiz&#243; una b&#250;squeda manual adicional entre las referencias de los art&#237;culos seleccionados&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">La revisi&#243;n sistem&#225;tica de la literatura ha permitido identificar&#44; por una parte&#44; la existencia de varias propuestas clasificatorias esencialmente basadas en criterios psicopatol&#243;gicos y&#44; por otra parte&#44; la importancia de evaluar las enfermedades relacionadas con la FM&#46; Seg&#250;n la evidencia analizada&#44; se han identificado los siguientes subgrupos clasificatorios en el paciente que cumple los criterios vigentes de 1990&#58; pacientes sin ninguna enfermedad concomitante &#40;FM tipo I&#41;&#44; pacientes con enfermedades cr&#243;nicas reum&#225;ticas y autoinmunitarias &#40;FM tipo II&#41;&#44; pacientes con grave alteraci&#243;n en la esfera psicopatol&#243;gica &#40;FM tipo III&#41; y pacientes simuladores &#40;FM tipo IV&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Conclusiones</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">Son pocos los estudios que analizan de forma espec&#237;fica c&#243;mo identificar subgrupos de pacientes con FM con una expresi&#243;n cl&#237;nica m&#225;s homog&#233;nea&#46; El an&#225;lisis ha permitido identificar que los principales aspectos a evaluar en la clasificaci&#243;n del paciente con FM son el perfil psicopatol&#243;gico y la coexistencia de otros procesos&#46; Una adecuada clasificaci&#243;n del paciente con FM s&#243;lo puede realizarse mediante una evaluaci&#243;n diagn&#243;stica individualizada por parte de un equipo mutidisciplinario&#46;</p>"
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Classification of fibromyalgia. A systematic review of the literature
Clasificación de la fibromialgia. Revisión sistemática de la literatura
Rafael Berenguera,
Corresponding author
rbelenguer@gmail.com

Corresponding author.
, Manuel Ramos-Casalsb, Antoni Sisoc, Javier Riverad
a Unit of Fibromyalgia, Hospital 9 d’Octubre, Valencia, Spain
b Department of Autoimmune Disease, IDIBAPS, Hospital Clínic, Barcelona, Spain
c CAP Les Corts, GESCLINIC, Hospital Clínic, Barcelona, Spain
d Department of Rheumatology, Instituto Provincial de Reumatología, Madrid, Spain
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        "titulo" => "Abstract"
        "resumen" => "<span class="elsevierStyleSectionTitle">Objective</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">To review the scientific literature concerning the classification of fibromyalgia &#40;FM&#41;&#44; including previous studies focusing on the gnosologic evaluation of FM&#44; with the aim of proposing a classificatory hypothesis based on the current scientific evidence&#46;</p> <span class="elsevierStyleSectionTitle">Methods</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Systematic review using a baseline MEDLINE search&#46; Search terms included &#8220;fibromyalgia&#8221; and &#8220;classification&#46;&#8221; Additional articles were identified through a comprehensive manual search of the references of retrieved articles&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">This systematic review has identified&#44; on the one hand&#44; several classificatory proposals based on psychopathological aspects&#44; and&#44; on the other hand&#44; the key role of associated diseases&#46; Based on the scientific evidence currently available&#44; the following FM subsets were defined&#58; patients with no associated processes &#40;type I FM&#41;&#44; patients with associated rheumatic&#47;autoimmune chronic diseases &#40;type II FM&#41;&#44; patients with severe psychiatric disorders &#40;type III FM&#41; and patients with simulated FM &#40;type IV FM&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Few studies have specifically analyzed the classification of FM into subgroups with a more homogeneous clinical expression&#46; Correct classification of patients with FM requires the integration of two key concepts &#40;psychopathological evaluation and coexistence of comorbid processes&#41;&#44; with an individual diagnostic evaluation by a multidisciplinary team&#46;</p>"
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        "resumen" => "<span class="elsevierStyleSectionTitle">Objetivo</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Recopilar la informaci&#243;n existente sobre la clasificaci&#243;n de la fibromialgia &#40;FM&#41;&#44; analizar los antecedentes relevantes en relaci&#243;n con una subdivisi&#243;n nosol&#243;gica y proponer una hip&#243;tesis clasificatoria fundamentada en la evidencia cient&#237;fica existente en la actualidad&#46;</p> <span class="elsevierStyleSectionTitle">Metodolog&#237;a</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">Revisi&#243;n sistem&#225;tica de la literatura mediante b&#250;squeda en la p&#225;gina web PubMed&#46; Los t&#233;rminos de b&#250;squeda en MEDLINE fueron &#171;fibromyalgia&#187; y &#171;classification&#187;&#46; Se realiz&#243; una b&#250;squeda manual adicional entre las referencias de los art&#237;culos seleccionados&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">La revisi&#243;n sistem&#225;tica de la literatura ha permitido identificar&#44; por una parte&#44; la existencia de varias propuestas clasificatorias esencialmente basadas en criterios psicopatol&#243;gicos y&#44; por otra parte&#44; la importancia de evaluar las enfermedades relacionadas con la FM&#46; Seg&#250;n la evidencia analizada&#44; se han identificado los siguientes subgrupos clasificatorios en el paciente que cumple los criterios vigentes de 1990&#58; pacientes sin ninguna enfermedad concomitante &#40;FM tipo I&#41;&#44; pacientes con enfermedades cr&#243;nicas reum&#225;ticas y autoinmunitarias &#40;FM tipo II&#41;&#44; pacientes con grave alteraci&#243;n en la esfera psicopatol&#243;gica &#40;FM tipo III&#41; y pacientes simuladores &#40;FM tipo IV&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Conclusiones</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">Son pocos los estudios que analizan de forma espec&#237;fica c&#243;mo identificar subgrupos de pacientes con FM con una expresi&#243;n cl&#237;nica m&#225;s homog&#233;nea&#46; El an&#225;lisis ha permitido identificar que los principales aspectos a evaluar en la clasificaci&#243;n del paciente con FM son el perfil psicopatol&#243;gico y la coexistencia de otros procesos&#46; Una adecuada clasificaci&#243;n del paciente con FM s&#243;lo puede realizarse mediante una evaluaci&#243;n diagn&#243;stica individualizada por parte de un equipo mutidisciplinario&#46;</p>"
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