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<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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Pediatrics. Consilium Medicum</journal-id><journal-title-group><journal-title xml:lang="en">Pediatrics. Consilium Medicum</journal-title><trans-title-group xml:lang="ru"><trans-title>Педиатрия. Consilium Medicum</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2658-6630</issn><issn publication-format="electronic">2658-6622</issn><publisher><publisher-name xml:lang="en">Consilium Medicum</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">109567</article-id><article-id pub-id-type="doi">10.26442/26586630.2022.2.201547</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">A familial case of Duncan's dirty dermatosis. Case report</article-title><trans-title-group xml:lang="ru"><trans-title>Семейный случай грязного дерматоза Дункана. Клинический случай</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4335-9334</contrib-id><name-alternatives><name xml:lang="en"><surname>Ufimceva</surname><given-names>Marina A.</given-names></name><name xml:lang="ru"><surname>Уфимцева</surname><given-names>Марина Анатольевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>D. Sci. (Med.), Prof., Ural State Medical University</p></bio><bio xml:lang="ru"><p>д-р мед. наук, проф., зав. каф. дерматовенерологии и безопасности жизнедеятельности, проректор по научно-исследовательской и клинической работе ФГБОУ ВО УГМУ, врач высшей квалификационной категории</p></bio><email>annaklepikova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6298-7216</contrib-id><name-alternatives><name xml:lang="en"><surname>Bochkarev</surname><given-names>Jurii M.</given-names></name><name xml:lang="ru"><surname>Бочкарев</surname><given-names>Юрий Михайлович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), Ural State Medical University</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доц., доц. каф. дерматовенерологии и безопасности жизнедеятельности ФГБОУ ВО УГМУ</p></bio><email>annaklepikova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3295-6686</contrib-id><name-alternatives><name xml:lang="en"><surname>Efimova</surname><given-names>Maria S.</given-names></name><name xml:lang="ru"><surname>Ефимова</surname><given-names>Мария Сергеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Lecturer, Ural State Medical University</p></bio><bio xml:lang="ru"><p>преподаватель каф. дерматовенерологии и безопасности жизнедеятельности ФГБОУ ВО УГМУ</p></bio><email>annaklepikova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5879-2018</contrib-id><name-alternatives><name xml:lang="en"><surname>Nikolaeva</surname><given-names>Kristina I.</given-names></name><name xml:lang="ru"><surname>Николаева</surname><given-names>Кристина Игоревна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.), Ural State Medical University</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доц. каф. дерматовенерологии и безопасности жизнедеятельности ФГБОУ ВО УГМУ</p></bio><email>annaklepikova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Galiullina</surname><given-names>Diana F.</given-names></name><name xml:lang="ru"><surname>Галиуллина</surname><given-names>Диана Фаритовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Clinical Resident, Ural State Medical University</p></bio><bio xml:lang="ru"><p>клин. ординатор каф. дерматовенерологии и безопасности жизнедеятельности ФГБОУ ВО УГМУ</p></bio><email>annaklepikova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8555-7462</contrib-id><name-alternatives><name xml:lang="en"><surname>Ivanova</surname><given-names>Anna  A.</given-names></name><name xml:lang="ru"><surname>Иванова</surname><given-names>Анна  Алексеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Clinical Resident, Ural State Medical University</p></bio><bio xml:lang="ru"><p>клин. ординатор каф. дерматовенерологии и безопасности жизнедеятельности ФГБОУ ВО УГМУ</p></bio><email>annaklepikova@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Ural State Medical University</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Уральский государственный медицинский университет» Минздрава России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2022-07-30" publication-format="electronic"><day>30</day><month>07</month><year>2022</year></pub-date><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>185</fpage><lpage>187</lpage><history><date date-type="received" iso-8601-date="2022-07-29"><day>29</day><month>07</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2022-07-29"><day>29</day><month>07</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, Consilium Medicum</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, ООО "Консилиум Медикум"</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">Consilium Medicum</copyright-holder><copyright-holder xml:lang="ru">ООО "Консилиум Медикум"</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-sa/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://pediatria.orscience.ru/2658-6630/article/view/109567">https://pediatria.orscience.ru/2658-6630/article/view/109567</self-uri><abstract xml:lang="en"><p>Terra firma-forme dermatosis (TFFD) belongs to the group of dirty-like dermatoses. The disease was described in 1987, but the etiology and pathogenesis are still insufficiently understood. The true incidence and prevalence of TFFD isn`t clear, there are few publications devoted to this disease. TFFD is clinically manifested by rashes that visually resemble dirt, which can persist for a long time despite the patient's compliance with hygiene standards. There are separate reports on the connection of TFFD with other skin diseases, as well as somatic pathology and malignant neoplasms. The article provides a review of the literature demonstrate two clinical cases of TFFD in children from the same family, draws attention to the development of TFFD after suffering a new coronavirus infection. The article is of interest to dermatovenerologists, family doctors and pediatricians.</p></abstract><trans-abstract xml:lang="ru"><p>Грязный дерматоз Дункана (ГДД) относится к группе грязеподобных дерматозов. Заболевание впервые описано в 1987 г., однако этиология и патогенез до сих пор изучены недостаточно. Истинная заболеваемость и распространенность ГДД неясна, публикаций, посвященных данному заболеванию, достаточно немного. ГДД клинически проявляется высыпаниями, визуально напоминающими грязь, которые могут длительно персистировать, несмотря на соблюдение пациентом гигиенических норм. Имеются отдельные сообщения о связи ГДД с другими заболеваниями кожи, а также соматической патологией и злокачественными новообразованиями. В статье представлен обзор литературы, продемонстрированы 2 клинических случая ГДД у детей из одной семьи; обращает внимание развитие ГДД после перенесенной новой коронавирусной инфекции. Статья представляет интерес для врачей-дерматовенерологов, семейных врачей, педиатров.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Duncan's dirty dermatosis</kwd><kwd>dirty-like dermatoses</kwd><kwd>terra firma-forme dermatosis</kwd><kwd>COVID-19</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>грязный дерматоз Дункана</kwd><kwd>грязеподобные дерматозы</kwd><kwd>terra firma-forme dermatosis</kwd><kwd>COVID-19</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Stiube A, Jenni D, Wiederkehr L, et al. Terra Firme-Forme Dermatosis Diagnostic Sign and Treatment: A Case Report. Case Rep Dermatol. 2019;11(1):108-12.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Greywal T, Philip R. Terra Firma-forme dermatosis: A report of ten individuals with Duncan’s dermatosis and literature review. 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