<?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>S1665-11462021000500443</article-id>
<article-id pub-id-type="doi">10.24875/bmhim.20000327</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Acné en el recién nacido]]></article-title>
<article-title xml:lang="en"><![CDATA[Acne in the newborn]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Godínez-Chaparro]]></surname>
<given-names><![CDATA[Juan A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vidaurri-De la Cruz]]></surname>
<given-names><![CDATA[Helena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Salud Centro Médico Nacional la Raza Unidad Médica de Alta Especialidad Hospital General Dr. Gaudencio González Garza]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Secretaría de Salud Hospital General de México Dr. Eduardo Liceaga ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2021</year>
</pub-date>
<volume>78</volume>
<numero>5</numero>
<fpage>443</fpage>
<lpage>449</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-11462021000500443&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-11462021000500443&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-11462021000500443&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El acné neonatal es una dermatosis transitoria que ocurre entre la segunda y la cuarta semanas de vida en uno de cada cinco niños. Es más frecuente en los varones, con una relación de sexo masculino-femenino de 4.5:1. Las manifestaciones clínicas incluyen comedones abiertos y cerrados que pueden progresar a lesiones inflamatorias como pápulas, pústulas eritematosas y, en casos raros, nódulos y quistes. Las zonas afectadas incluyen la frente, las mejillas, el mentón y los párpados, y en algunas ocasiones puede extenderse a la piel cabelluda, el cuello y el tronco. Ocurre por la mayor producción de andrógenos placentarios y neonatales (de origen suprarrenal en ambos sexos y de origen testicular en los varones), que provoca hipertrofia de las glándulas sebáceas y mayor producción de sebo. La mayoría de los casos son leves y autolimitados. Cuando el acné neonatal es grave y prolongado, se debe considerar la posibilidad de hiperandrogenismo, cuyas causas más frecuentes en esta edad son la hiperplasia suprarrenal congénita y los tumores, adrenales o gonadales, productores de andrógenos. El diagnóstico del acné neonatal es clínico: se debe distinguir de la pustulosis cefálica neonatal, otras dermatosis neonatales vesiculopustulares, enfermedades infecciosas y reacciones acneiformes. Habitualmente, un dermolimpiador suave y agua resultan suficientes para su manejo. Las lesiones obstructivas (comedones abiertos y cerrados) pueden requerir retinoides tópicos o ácido azelaico al 20%, y las lesiones inflamatorias, algunos antibióticos tópicos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Neonatal acne (NA) is a transitory dermatosis that occurs between the second and fourth weeks of life in 20% of children. This condition is more frequent in males, with a male-female ratio of 4.5:1. Present primary skin lesions are open and closed comedones which can evolve into papules, erythematous pustules and, in rare cases, nodules and cysts. NA topography includes the forehead, cheeks, chin, and eyelids, but occasionally it spreads to the scalp, neck, and trunk. NA occurs due to an elevated production of placental and neonatal androgens (of adrenal origin in both sexes and of testicular origin in males) which cause enlargement of the sebaceous glands and increases the production of sebum. Most cases are mild and transient, but if NA is severe and long-lasting, clinical and paraclinical examination will be necessary to find congenital adrenal hyperplasia or a virilizing tumor of adrenal or gonadal origin. The diagnosis of NA is clinical; its main differential Ádiagnoses are neonatal cephalic pustulosis, other neonatal vesiculopustular dermatoses, infectious diseases, and acneiform reactions. The resolution of NA is spontaneous. In most cases, the use of a mild dermal cleanser and water will be sufficient. For comedogenic lesions (open and closed comedones), topical retinoids or 20% azelaic acid may be used, as well as some topical antibiotics for inflammatory lesions.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Acné neonatal]]></kwd>
<kwd lng="es"><![CDATA[Acné neonatorum]]></kwd>
<kwd lng="es"><![CDATA[Acné del recién nacido]]></kwd>
<kwd lng="es"><![CDATA[Acné]]></kwd>
<kwd lng="en"><![CDATA[Neonatal acne]]></kwd>
<kwd lng="en"><![CDATA[Neonatorum acne]]></kwd>
<kwd lng="en"><![CDATA[Newborn acne]]></kwd>
<kwd lng="en"><![CDATA[Acne]]></kwd>
</kwd-group>
</article-meta>
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