<?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>1665-1146</journal-id>
<journal-title><![CDATA[Boletín médico del Hospital Infantil de México]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Med. Hosp. Infant. Mex.]]></abbrev-journal-title>
<issn>1665-1146</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Salud, Hospital Infantil de México Federico Gómez]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-11462025000400009</article-id>
<article-id pub-id-type="doi">10.24875/bmhim.24000125</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Edema facial persistente por mordedura de araña: un caso de loxoscelismo cutáneo edematoso]]></article-title>
<article-title xml:lang="en"><![CDATA[Persistent facial edema due to spider bite: a case of edematous cutaneous loxoscelism]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gonzales-Flores]]></surname>
<given-names><![CDATA[Carla]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vigo]]></surname>
<given-names><![CDATA[Natalia I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Atamari-Anahui]]></surname>
<given-names><![CDATA[Noé]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cuadros-Castro]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Salud del Niño-Breña Servicio de Emergencia ]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Perú</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad San Ignacio de Loyola Unidad de Investigación para la Generación y Síntesis de Evidencias en Salud Vicerrectorado de Investigación]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Perú</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Salud del Niño-Breña Servicio de Infectología ]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Perú</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2025</year>
</pub-date>
<volume>82</volume>
<numero>4</numero>
<fpage>267</fpage>
<lpage>271</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-11462025000400009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-11462025000400009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-11462025000400009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: El loxoscelismo es causado por la mordedura de arañas del género Loxosceles. Puede presentarse en las formas cutáneo-necrótica, cutáneo-visceral, o como loxoscelismo cutáneo predominantemente edematoso. Esta última es una variante rara caracterizada por edema sin necrosis, con una frecuencia del 5% de todos los casos de loxoscelismo.  Caso clínico:: Niña de 6 años que presentó edema en el párpado y fue incrementándose progresivamente extendiéndose a todo el rostro. El familiar refirió que este evento ocurrió después de una mordedura de araña. En la exploración física se evidenció una lesión tipo mordedura en el párpado inferior izquierdo, edema generalizado en toda la cara y disfonía. En los exámenes se halló elevación de la creatinina y de la bilirrubina; el resto fue normal. Recibió inicialmente corticosteroides, antihistamínicos y epinefrina. Debido a la persistencia del edema, se administró suero antiloxoscélico y se continuó con corticosteroides y antibióticos. A las 48 horas se observó disminución del edema y al séptimo día resolución casi completa, por lo que fue dada de alta sin complicaciones.  Conclusiones: El loxoscelismo cutáneo predominantemente edematoso es una variante rara. En la emergencia puede simular otras enfermedades, como celulitis o anafilaxia. El tratamiento de soporte es importante para evitar complicaciones en los niños.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: The bite of spiders of the Loxosceles genus causes loxoscelism. It can occur in cutaneous-necrotic, cutaneous-visceral, or predominantly edematous cutaneous loxoscelism forms. This last form is a rare variant characterized by edema without necrosis with a frequency of 5% of all cases of loxoscelism.  Clinical case: A 6-year-old girl presented edema in the eyelid that progressively increased and spread to the entire face. The relative reported that this event occurred after a spider bite. Physical examination revealed a bite-type lesion on the lower left eyelid, generalized edema throughout the face, and dysphonia. The tests showed elevated creatinine and bilirubin; the rest were normal. Initially, she received corticosteroids, antihistamines, and adrenaline. Due to the persistence of edema, we administrated anti-loxosceles serum and continued with corticosteroids and antibiotics. After 48 hours, edema decreased, and on the seventh day, it was almost entirely resolved, so the patient was discharged without complications  Conclusions: Predominantly edematous cutaneous loxoscelism is a rare variant. It can mimic other diseases like cellulitis or anaphylaxis in the emergency room. Supportive treatment is essential to avoid complications in children.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Loxoscelismo cutáneo]]></kwd>
<kwd lng="es"><![CDATA[Edema]]></kwd>
<kwd lng="es"><![CDATA[Loxosceles laeta]]></kwd>
<kwd lng="es"><![CDATA[Picaduras de arañas]]></kwd>
<kwd lng="es"><![CDATA[Niño]]></kwd>
<kwd lng="en"><![CDATA[Cutaneous loxoscelism]]></kwd>
<kwd lng="en"><![CDATA[Edema]]></kwd>
<kwd lng="en"><![CDATA[Loxosceles laeta]]></kwd>
<kwd lng="en"><![CDATA[Spider bites]]></kwd>
<kwd lng="en"><![CDATA[Child]]></kwd>
</kwd-group>
</article-meta>
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