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<front>
<journal-meta>
<journal-id journal-id-type="nlm-ta">Our Dermatol Online</journal-id>
<journal-title>Our Dermatol Online</journal-title>
<issn pub-type="epub">2081-9390</issn>
<publisher>
<publisher-name>Our Dermatology Online</publisher-name>
<publisher-loc>Poland</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="publisher-id">OURD-10-323</article-id>
<article-id pub-id-type="doi">10.7241/ourd.20193.34</article-id>
<article-categories>
<subj-group subj-group-type="heading">
<subject>Historical Article</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>Dermatology Eponyms &#x2013; sign &#x2013; Lexicon (U)</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname>Brzezinski</surname>
<given-names>Piotr</given-names>
</name>
<xref ref-type="aff" rid="aff1">1</xref>
<xref ref-type="aff" rid="aff2">2</xref>
<xref ref-type="corresp" rid="cor1"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Martini</surname>
<given-names>Lorenzo</given-names>
</name>
<xref ref-type="aff" rid="aff2">2</xref>
</contrib>
</contrib-group>
<aff id="aff1"><label>1</label><italic>Institute of Biology and Environmental Protection, Pomeranian Academy, Slupsk, Poland</italic></aff>
<aff id="aff2"><label>2</label><italic>University of Siena, Department of Pharmaceutical Biotechnologies, Via A. Moro 2, 53100 Siena, Italy</italic></aff>
<author-notes>
<corresp id="cor1">
<bold>Corresponding author:</bold> Piotr Brzezinski, MD PhD, E-mail: <email xlink:href="brzezoo77@yahoo.com">brzezoo77@yahoo.com</email>
</corresp>
</author-notes>
<pub-date pub-type="ppub">
<year>2019</year>
</pub-date>
<volume>10</volume>
<issue>3</issue>
<fpage>324</fpage>
<lpage>323</lpage>
<history>
<date date-type="received"><day>13</day><month>01</month><year>2019</year></date>
<date date-type="accepted"><day>10</day><month>03</month><year>2019</year></date>
</history>
<permissions>
<copyright-statement>Copyright: &#x000a9; Our Dermatol Online 3</copyright-statement>
<copyright-year>2019</copyright-year>
<license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc-sa/3.0">
<p>This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</p>
</license>
</permissions>
<abstract>
<p>Eponyms are used almost daily in the clinical practice of dermatology. And yet, information about the person behind the eponyms is difficult to find. Indeed, who is&#x003F; What is this person&#x2019;s nationality&#x003F; Is this person alive or dead&#x003F; How can one find the paper in which this person first described the disease&#x003F; Eponyms are used to describe not only disease, but also clinical signs, surgical procedures, staining techniques, pharmacological formulations, and even pieces of equipment. In this article we present the symptoms starting with (U) and other. The symptoms and their synonyms, and those who have described this symptom or phenomenon.</p>
</abstract>
<kwd-group>
<kwd>Eponyms</kwd>
<kwd>Skin diseases</kwd>
<kwd>Sign</kwd>
<kwd>Phenomenon</kwd>
</kwd-group>
</article-meta>
</front>
<body>
<sec id="sec1-1">
<title>UGLY DUCKLING SIGN</title>
<p>In 1998, Grob and Bonerandi introduced the &#x201C;ugly duckling&#x201D; concept to demonstrate that nevi in the same individual tend to resemble one another and that atypical mole often deviates from the individual&#x2019;s nevus pattern. In other words, nevus that does not resemble other nevi is more likely to be suspicious of melanoma [<xref ref-type="bibr" rid="ref1">1</xref>,<xref ref-type="bibr" rid="ref2">2</xref>].</p>
</sec>
<sec id="sec1-2">
<title>UKRAINIAN BLACK TONGUE SIGN (C. 1771, MOSCOW)</title>
<p>Bubonic plague. Black tongue in Bubonic plague. A similar sign &#x2013; Antichrist sign, where black lips are a classic indication of an infection with Yersinia pestis [<xref ref-type="bibr" rid="ref3">3</xref>-<xref ref-type="bibr" rid="ref5">5</xref>].</p>
</sec>
<sec id="sec1-3">
<title>ULNAR LEPROSY SIGN</title>
<p>Thickening of the ulnar nerve at the elbow [<xref ref-type="bibr" rid="ref6">6</xref>,<xref ref-type="bibr" rid="ref7">7</xref>]. A sign of tuberculoid leprosy. Also known as Elbow sign.</p>
</sec>
<sec id="sec1-4">
<title>UMBILICAL SIGN</title>
<p>Umbilical sign is seen in Marfan syndrome. It is the unusual ability to touch the umbilicus with the right hand, crossing the back, and approaching from the left side, indicating increased length of upper extremity [<xref ref-type="bibr" rid="ref8">8</xref>].</p>
</sec>
<sec id="sec1-5">
<title>UREMIA TONGUE SIGN</title>
<p>The tongue is dry in cases of uremia [<xref ref-type="bibr" rid="ref9">9</xref>].</p>
</sec>
<sec id="sec1-6">
<title>URIOLLA&#x2019;S SIGN</title>
<p>The presence in the urine of malarial patients of minute black granules of blood pigment [<xref ref-type="bibr" rid="ref10">10</xref>].</p>
</sec>
</body>
<back>
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<fn-group>
<fn fn-type="supported-by">
<p><bold>Source of Support:</bold> Nil</p>
</fn>
<fn fn-type="conflict">
<p><bold>Conflict of Interest:</bold> None declared.</p>
</fn>
</fn-group>
</back>
</article>
