<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2448-9190</journal-id>
<journal-title><![CDATA[Revista alergia México]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. alerg. Méx.]]></abbrev-journal-title>
<issn>2448-9190</issn>
<publisher>
<publisher-name><![CDATA[Colegio Mexicano de Inmunología Clínica y Alergia A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2448-91902019000400403</article-id>
<article-id pub-id-type="doi">10.29262/ram.v66i4.629</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Alteraciones tiroideas en urticaria crónica espontánea]]></article-title>
<article-title xml:lang="en"><![CDATA[Thyroid disorders in spontaneous chronic urticaria]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[O&#8217;Farrill-Romanillos]]></surname>
<given-names><![CDATA[Patricia María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Álvarez-Chávez]]></surname>
<given-names><![CDATA[Fabián Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Xochihua-García]]></surname>
<given-names><![CDATA[Juan José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Centro Médico Nacional Siglo XXI Hospital de Especialidades]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<volume>66</volume>
<numero>4</numero>
<fpage>403</fpage>
<lpage>408</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2448-91902019000400403&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2448-91902019000400403&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2448-91902019000400403&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes:  La urticaria crónica espontánea (UCE) se asocia con enfermedad tiroidea hasta en 54 %, con predominio de hipotiroidismo.  Objetivo:  Describir las alteraciones de la función tiroidea en pacientes con UCE en un tercer nivel de atención.  Métodos:  Estudio trasversal, observacional y descriptivo en el que se incluyeron hombres y mujeres mayores de 18 años de edad con UCE en quienes se cuantificó TSH y T4 libre. De acuerdo con los resultados, fueron clasificados como eutiroideos, hipertiroideos e hipotiroideos, en estos últimos se buscó intencionadamente anticuerpos antitiroideos. Se evaluaron las características demográficas y bioquímicas de los resultados.  Resultados:  Se analizaron las características clínicas de 127 pacientes con UCE. Las mujeres representaron 78 %. La media de edad fue de 44.5 ± 15.1 años. Se identificaron alteraciones de la función tiroidea en 50 pacientes (39 %); hipotiroidismo subclínico (HS) en 41 (82%) y ninguno con hipertiroidismo. De los pacientes con hipotiroidismo, 14 (28%) presentaron anticuerpos positivos; todas eran mujeres.  Conclusiones:  Más de un tercio de los pacientes con UCE analizados presentaron alteraciones de la función tiroidea; fue más común el hipotiroidismo subclínico. La importancia de identificar esta entidad radica en la posibilidad de tratamiento multidisciplinario con el servicio de endocrinología. Estudios posteriores podrán establecer si el hipotiroidismo influye en la actividad de la UCE.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background:  Chronic spontaneous urticaria (CSU) is linked to thyroid disease in up to 54%, with predominance of hypothyroidism.  Objective:  To describe the impairments of the thyroid function in patients with CSU in a third level of care.  Methods:  A cross-sectional, observational, and descriptive study in which we have included men and women over 18-year-old with CSU; in which TSH and free T4 were quantified. According to the results, they were classified as euthyroid, hyperthyroid, and hypothyroid; in the latter ones, the presence of antithyroid antibodies was intentionally sought. The demographic and biochemical characteristics of the results were assessed.  Results:  The clinical characteristics of 127 patients with CSU were analyzed. Women accounted for 78%. The average age was 44.5 ± 15.1 years. Impairments of the thyroid function were identified in 50 patients (39%), and subclinical hypothyroidism (SH) occurred in 41 (82%) of them; patients with hyperthyroidism were not found. Of the patients with hypothyroidism, 14 (28%) presented positive antibodies; all of them were women.  Conclusions:  More than a third of the analyzed patients with CSU presented impairments of the thyroid function; subclinical hypothyroidism (SH) was more common. The importance of identifying this entity lies in the possibility of a multidisciplinary treatment with endocrinology. Subsequent studies may establish whether the presence of hypothyroidism influences the activity of CSU.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Urticaria]]></kwd>
<kwd lng="es"><![CDATA[Hipotiroidismo]]></kwd>
<kwd lng="es"><![CDATA[Tiroiditis autoinmune]]></kwd>
<kwd lng="en"><![CDATA[Urticaria]]></kwd>
<kwd lng="en"><![CDATA[Hypothyroidism]]></kwd>
<kwd lng="en"><![CDATA[Autoimmune thyroiditis]]></kwd>
</kwd-group>
</article-meta>
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