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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="review-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Vestnik dermatologii i venerologii</journal-id><journal-title-group><journal-title xml:lang="en">Vestnik dermatologii i venerologii</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник дерматологии и венерологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0042-4609</issn><issn publication-format="electronic">2313-6294</issn><publisher><publisher-name xml:lang="en">Rossijskoe Obschestvo Dermatovenerologov i Kosmetologov</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">16898</article-id><article-id pub-id-type="doi">10.25208/vdv16898</article-id><article-id pub-id-type="edn">nwrrtp</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>REVIEWS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОБЗОР ЛИТЕРАТУРЫ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Review Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Leukonychia associated with hereditary syndromes</article-title><trans-title-group xml:lang="ru"><trans-title>Лейконихия, ассоциированная с наследственными синдромами</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9676-1581</contrib-id><name-alternatives><name xml:lang="en"><surname>Saranyuk</surname><given-names>Roman V.</given-names></name><name xml:lang="ru"><surname>Саранюк</surname><given-names>Роман Владимирович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>roman.saranuk@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6280-247X</contrib-id><contrib-id contrib-id-type="spin">6373-6556</contrib-id><name-alternatives><name xml:lang="en"><surname>Polonikov</surname><given-names>Alexey V.</given-names></name><name xml:lang="ru"><surname>Полоников</surname><given-names>Алексей Валерьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Med.), Professor</p></bio><bio xml:lang="ru"><p>д.м.н., профессор</p></bio><email>polonikov@rambler.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0059-9159</contrib-id><name-alternatives><name xml:lang="en"><surname>Gosteva</surname><given-names>Tatyana A.</given-names></name><name xml:lang="ru"><surname>Гостева</surname><given-names>Татьяна Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>ya-lisenok-@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Society for Integrative Dermatology</institution></aff><aff><institution xml:lang="ru">Общество интегративной дерматологии</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Dermatology and Venereology Clinic “Derma Expert”</institution></aff><aff><institution xml:lang="ru">Кабинет дерматологии и венерологии «Derma Эксперт»</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Kursk State Medical University</institution></aff><aff><institution xml:lang="ru">Курский государственный медицинский университет</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Kurchatov Center for Modern Medicine</institution></aff><aff><institution xml:lang="ru">Курчатовский центр современной медицины</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-08-19" publication-format="electronic"><day>19</day><month>08</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-09-30" publication-format="electronic"><day>30</day><month>09</month><year>2025</year></pub-date><volume>101</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>17</fpage><lpage>26</lpage><history><date date-type="received" iso-8601-date="2025-05-12"><day>12</day><month>05</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-08-06"><day>06</day><month>08</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Saranyuk R.V., Polonikov A.V., Gosteva T.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Саранюк Р.В., Полоников А.В., Гостева Т.А.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Saranyuk R.V., Polonikov A.V., Gosteva T.A.</copyright-holder><copyright-holder xml:lang="ru">Саранюк Р.В., Полоников А.В., Гостева Т.А.</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/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://vestnikdv.ru/jour/article/view/16898">https://vestnikdv.ru/jour/article/view/16898</self-uri><abstract xml:lang="en"><p>Leukonychia is the development of white patches on the nail plates. This type of onychodystrophy has different anatomical and morphological types and may be caused by a variety of both exogenous and endogenous factors. Diagnosis of leukonychia as a clinical symptom of nail damage is not difficult. However, in some cases, the presence of leukonychia in a patient requires closer attention. While acquired leukonychia is most commonly the result of a mechanical damage to the nail matrix, congenital leukonychia, in addition to its idiopathic nature, can be a sign of severe hereditary pathology. Congenital leukonychia may be part of various hereditary diseases and syndromes, being one of the symptoms or an essential component of the disease. Despite the asymptomatic course and lack of life-threatening risk compared to other clinical manifestations of hereditary syndromes and diseases, the diagnosis of leukonychia can help multidisciplinary physicians to identify the syndromal nature of this disorder, with further organization of the diagnostic search for other components of the suspected disease. This issue is especially important in the interdisciplinary collaboration of physicians of various specialties, especially when diagnosis is challenging. The article discusses hereditary diseases and syndromes characterized by leukonychia in patients, and provides summary on the etiopathogenesis and clinical presentation of these disorders.</p></abstract><trans-abstract xml:lang="ru"><p>Лейконихия представляет собой появление на ногтевых пластинах участков белого цвета. Данный тип ониходистрофии имеет разные анатомические и морфологические типы и может быть обусловлен целым рядом как экзогенных, так и эндогенных факторов. Диагностика лейконихии как клинического симптома поражения ногтей не представляет трудностей. Однако в ряде случаев наличие у пациента поражения ногтей по типу лейконихии требует более пристального внимания. Если приобретенная лейконихия чаще всего является результатом механического повреждения матрицы ногтя, то врожденная лейконихия, помимо идиопатического течения, может быть одним из признаков тяжелой наследственной патологии. Врожденная лейконихия может выступать частью различных наследственных болезней и синдромов, являясь одним из признаков или обязательной составляющей заболевания. Несмотря на бессимптомное течение и отсутствие риска для жизни по сравнению с другими клиническими проявлениями наследственных синдромов и болезней, диагностика лейконихии может помочь врачам различных специальностей выявить синдромальную природу данного расстройства с дальнейшей организацией диагностического поиска других компонентов предполагаемого заболевания. Данный вопрос особенно важен при междисциплинарном взаимодействии врачей различных специальностей, особенно в случаях трудностей в постановке диагноза. В статье рассмотрены наследственные заболевания и синдромы, характеризующиеся наличием лейконихии у пациентов, представлена краткая информация об этиопатогенезе и клинической картине данных расстройств.</p></trans-abstract><kwd-group xml:lang="en"><kwd>leukonychia</kwd><kwd>FLOTCH syndrome</kwd><kwd>onychodystrophies</kwd><kwd>hereditary syndromes</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>лейконихия</kwd><kwd>FLOTCH-синдром</kwd><kwd>ониходистрофии</kwd><kwd>наследственные синдромы</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Weber FP. Some pathologic conditions of the nails. Int Clin. 1899;28(1):108–130.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Grossman M, Scher RK. Leukonychia: review and classification. 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