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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="letter" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Consortium PSYCHIATRICUM</journal-id><journal-title-group><journal-title xml:lang="en">Consortium PSYCHIATRICUM</journal-title><trans-title-group xml:lang="ru"><trans-title>Consortium PSYCHIATRICUM</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2712-7672</issn><issn publication-format="electronic">2713-2919</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">15802</article-id><article-id pub-id-type="doi">10.17816/CP15802</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>LETTER TO THE EDITOR</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ПИСЬМО В РЕДАКЦИЮ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Correspondence</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Secondary psychotic syndromes should be excluded before assuming idiopathic digital “Folie à trois”</article-title><trans-title-group xml:lang="ru"><trans-title>Перед постановкой диагноза идиопатического виртуального folie à trois необходимо исключить вторичные психотические синдромы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0662-5178</contrib-id><name-alternatives><name xml:lang="en"><surname>Gama-Marques</surname><given-names>João</given-names></name><name xml:lang="ru"><surname>Гама-Маркеш</surname><given-names>Жуан</given-names></name></name-alternatives><address><country country="PT">Portugal</country></address><bio xml:lang="en"><p>MD, MSc, PhD, Invited Assistant Professor, Faculdade de Medicina, Centro Académico de Medicina de Lisboa, Consulta de Esquizofrenia Resistente, Unidade Local de Saúde de São José, Centro Clínico Académico de Lisboa</p></bio><email>joaogamamarques@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Júlio de Matos Hospital</institution></aff><aff><institution xml:lang="ru">Больница Жулиу ди Матуш</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">University Clinic of Psychiatry And Medical Psychology</institution></aff><aff><institution xml:lang="ru">Университетская клиника психиатрии и медицинской психологии</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2026-03-20" publication-format="electronic"><day>20</day><month>03</month><year>2026</year></pub-date><pub-date date-type="pub" iso-8601-date="2026-03-31" publication-format="electronic"><day>31</day><month>03</month><year>2026</year></pub-date><volume>7</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>60</fpage><lpage>61</lpage><history><date date-type="received" iso-8601-date="2025-12-05"><day>05</day><month>12</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2026-03-06"><day>06</day><month>03</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Gama-Marques J.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, Гама-Маркеш Ж.</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Gama-Marques J.</copyright-holder><copyright-holder xml:lang="ru">Гама-Маркеш Ж.</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-nd/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://consortium-psy.com/jour/article/view/15802">https://consortium-psy.com/jour/article/view/15802</self-uri><abstract xml:lang="en"><p/></abstract><trans-abstract xml:lang="ru"><p/></trans-abstract><funding-group/></article-meta><fn-group><fn xml:lang="en"><p>Parent article DOI <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.17816/CP15689">https://doi.org/10.17816/CP15689</ext-link></p></fn><fn xml:lang="ru"><p>DOI родительской статьи <ext-link ext-link-type="uri" xlink:href="https://doi.org/10.17816/CP15689">https://doi.org/10.17816/CP15689</ext-link></p></fn></fn-group></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Banerjee D. 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