{"id":2934,"date":"2026-01-29T17:22:20","date_gmt":"2026-01-29T14:22:20","guid":{"rendered":"https:\/\/wiki.dev.voka.io\/glossary\/vitropression\/"},"modified":"2026-01-29T17:22:26","modified_gmt":"2026-01-29T14:22:26","slug":"vitropression","status":"publish","type":"glossary_item","link":"https:\/\/wiki.dev.voka.io\/fr\/glossaire\/vitropression\/","title":{"rendered":"Diascopie"},"content":{"rendered":"\n<p>La diascopie (du grec <em>dia<\/em> &#8211; \u00e0 travers et <em>skopeo<\/em> &#8211; regarder) est une m\u00e9thode de diagnostic simple mais importante en dermatologie, qui consiste \u00e0 appuyer sur l&rsquo;\u00e9l\u00e9ment \u00e9ruptif avec un objet transparent (lame, spatule en verre ou r\u00e8gle transparente). <\/p>\n\n<p>La proc\u00e9dure permet de d\u00e9sengorger la peau au niveau du point de pression en d\u00e9pla\u00e7ant le sang des vaisseaux du lit microcirculatoire.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x43A;&#x43B;&#x438;&#x43D;&#x438;&#x447;&#x435;&#x441;&#x43A;&#x43E;&#x435;-&#x437;&#x43D;&#x430;&#x447;&#x435;&#x43D;&#x438;&#x435;\"><strong>Signification clinique<\/strong><\/h2>\n\n<p>La m\u00e9thode est utilis\u00e9e pour le diagnostic diff\u00e9rentiel des taches :  <\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Taches vasculaires (inflammatoires) :<\/strong> Sous l&rsquo;effet de la pression, elles p\u00e2lissent ou disparaissent lorsque le sang s&rsquo;\u00e9chappe des vaisseaux dilat\u00e9s. Lorsque la pression est interrompue, la couleur est r\u00e9tablie. <\/li>\n\n\n\n<li><strong>Taches h\u00e9morragiques (p\u00e9t\u00e9chies, purpura) :<\/strong> Elles ne changent pas de couleur lorsqu&rsquo;on les presse, car les globules rouges se trouvent \u00e0 l&rsquo;ext\u00e9rieur du lit vasculaire (tissu satur\u00e9) et ne peuvent pas \u00eatre \u00ab\u00a0expuls\u00e9s\u00a0\u00bb.  <\/li>\n<\/ul>\n\n<p>La diascopie est \u00e9galement utilis\u00e9e pour le diagnostic du lupus \u00e9ryth\u00e9mateux tuberculeux (sympt\u00f4me de la gel\u00e9e de pomme &#8211; les nodules deviennent brun jaun\u00e2tre lorsqu&rsquo;on les presse).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La diascopie (du grec <em>dia <\/em>&#8211; \u00e0 travers et <em>skopeo<\/em> &#8211; regarder) est une m\u00e9thode de diagnostic simple mais importante en dermatologie, qui consiste \u00e0 appuyer sur l&rsquo;\u00e9l\u00e9ment \u00e9ruptif avec un objet transparent (lame, spatule en verre ou r\u00e8gle transparente). <\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-2934","glossary_item","type-glossary_item","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v26.5) - 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