{"id":15008,"date":"2026-03-20T10:10:47","date_gmt":"2026-03-20T09:10:47","guid":{"rendered":"https:\/\/rvh-synergie.org\/actualites\/sang-dans-les-selles-causes-maladies-et-quand-consulter-un-medecin\/"},"modified":"2026-03-20T10:10:48","modified_gmt":"2026-03-20T09:10:48","slug":"sang-dans-les-selles-causes-maladies-et-quand-consulter-un-medecin","status":"publish","type":"post","link":"https:\/\/rvh-synergie.org\/actualites\/sang-dans-les-selles-causes-maladies-et-quand-consulter-un-medecin\/","title":{"rendered":"Sang dans les selles : causes, maladies et quand consulter un m\u00e9decin"},"content":{"rendered":"<p><!--$--><\/p>\n<nav data-hk=\"00942120a20100\" class=\"TOC mt-xl mb-lg \" data-qa-article-table-of-contents>\n<p class=\"headline-sm mb-sm\">Table des mati\u00e8res<\/p>\n<p><!--$--><\/p>\n<ol data-hk=\"00942120a2010100\" class=\"RUC-List RUC-List--Ordered RUC-List--Theme-Neutral RUC-List--Spacing-MD \">\n<li data-hk=\"00942120a201010200\" class=\"\">Les h\u00e9morro\u00efdes sont la cause la plus fr\u00e9quente de sang dans les selles<\/li>\n<li data-hk=\"00942120a201010210\" class=\"\">Autres causes de sang dans les selles<\/li>\n<li data-hk=\"00942120a201010220\" class=\"\">Maladies graves : Quand le sang dans les selles devient dangereux<\/li>\n<li data-hk=\"00942120a201010230\" class=\"\">Autres maladies possibles<\/li>\n<li data-hk=\"00942120a201010240\" class=\"\">Sang dans les selles : quand consulter un m\u00e9decin<\/li>\n<li data-hk=\"00942120a201010250\" class=\"\">Pr\u00e9vention et pr\u00e9vention<\/li>\n<\/ol>\n<p><!--\/--><\/nav>\n<div data-hk=\"00942120a20200\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Le sang dans les selles est un signal d\u2019alarme courant qui peut aller de causes inoffensives \u00e0 des maladies graves, potentiellement mortelles. <\/p>\n<\/div>\n<div data-hk=\"00942120a20210\" id=\"h\u00e4morrhoiden-als-h\u00e4ufigste-ursache-f\u00fcr-blut-im-stuhl\" class=\"Html-Block\" data-qa-article-content-text>\n<h2>Les h\u00e9morro\u00efdes sont la cause la plus fr\u00e9quente de sang dans les selles<\/h2>\n<p>Les h\u00e9morro\u00efdes, \u00e9galement appel\u00e9es amas de sang, sont la cause la plus fr\u00e9quente de sang frais rouge vif sur le papier toilette, dans les toilettes ou coulant \u00e0 c\u00f4t\u00e9 des selles. <\/p>\n<\/div>\n<div data-hk=\"00942120a20220\" id=\"h\u00e4morrhoiden-als-h\u00e4ufigste-ursache-f\u00fcr-blut-im-stuhl\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Ils r\u00e9sultent d&rsquo;un effort intense d\u00fb \u00e0 la constipation, d&rsquo;une position assise prolong\u00e9e (par exemple dans la vie quotidienne au bureau), d&rsquo;une grossesse ou d&rsquo;une toux chronique &#8211; l&rsquo;augmentation de la pression entra\u00eene un gonflement des veines de la r\u00e9gion anale. Souvent accompagn\u00e9es de d\u00e9mangeaisons, d\u2019humidit\u00e9 ou d\u2019une sensation de pression, elles sont g\u00e9n\u00e9ralement indolores sauf formation de caillot sanguin.<\/p>\n<\/div>\n<aside data-hk=\"00942120a202304\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-mobile Ad-Slot-hor Ad-Slot-FC\">\n<div class=\"Ad-Slot-FC-Container\">\n<div class=\"Ad-Slot-FC-Window\">\n<div id=\"ad-slot-mobile-hor-2\" data-orientation=\"hor\" data-index=\"2\" data-slot=\"ad-slot\" data-device=\"mobile\"><\/div>\n<\/div>\n<\/div>\n<\/aside>\n<div data-hk=\"00942120a20240\" id=\"weitere-ursachen-von-blut-im-stuhl\" class=\"Html-Block\" data-qa-article-content-text>\n<h2>Autres causes de sang dans les selles<\/h2>\n<p>Les fissures anales, petites d\u00e9chirures de la membrane muqueuse sensible de l&rsquo;anus, provoquent \u00e9galement du sang rouge vif et une douleur intense et lancinante lors des selles. Souvent provoqu\u00e9es par des selles dures et volumineuses ou par de la diarrh\u00e9e, elles gu\u00e9rissent souvent d&rsquo;elles-m\u00eames si la cause (par exemple la constipation) est corrig\u00e9e.<\/p>\n<\/div>\n<div data-hk=\"00942120a20250\" id=\"weitere-ursachen-von-blut-im-stuhl\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Plus rarement, des causes inoffensives telles que des saignements du nez ou de la bouche (qui p\u00e9n\u00e8trent dans les selles lors de la d\u00e9glutition), le sang menstruel ou des aliments (betterave, myrtille, r\u00e9glisse) simulent un saignement. Ces \u00ab fausses alertes \u00bb peuvent \u00eatre identifi\u00e9es gr\u00e2ce \u00e0 des tromperies nutritionnelles.<\/p>\n<\/div>\n<aside data-hk=\"00942120a202604\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-mobile Ad-Slot-out\">\n<div id=\"ad-slot-mobile-out-1\" data-orientation=\"out\" data-index=\"1\" data-slot=\"ad-slot\" data-device=\"mobile\"><\/div>\n<\/aside>\n<div data-hk=\"00942120a20270\" class=\"Ad-Row\">\n<div class=\"Ad-Col col-lg-5\">\n<div data-hk=\"00942120a2027104\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-desktop Ad-Slot-ver\" role=\"region\" aria-label=\"Anzeige 1\">\n<div id=\"ad-slot-desktop-ver-1\" data-orientation=\"ver\" data-index=\"1\" data-slot=\"ad-slot\" data-device=\"desktop\"><\/div>\n<\/div>\n<\/div>\n<div class=\"Ad-Col col-lg-5\">\n<aside data-hk=\"00942120a2027204\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-desktop Ad-Slot-ver Ad-Slot-FC\">\n<div class=\"Ad-Slot-FC-Container\">\n<div class=\"Ad-Slot-FC-Window\">\n<div id=\"ad-slot-desktop-ver-2\" data-orientation=\"ver\" data-index=\"2\" data-slot=\"ad-slot\" data-device=\"desktop\"><\/div>\n<\/div>\n<\/div>\n<\/aside>\n<\/div>\n<\/div>\n<div data-hk=\"00942120a20280\" id=\"ernsthafte-erkrankungen-wann-blut-im-stuhl-gef\u00e4hrlich-wird\" class=\"Html-Block\" data-qa-article-content-text>\n<h2>Maladies graves : Quand le sang dans les selles devient dangereux<\/h2>\n<p>Les maladies inflammatoires de l&rsquo;intestin (MII) telles que la maladie de Crohn ou la colite ulc\u00e9reuse sont des maladies auto-immunes qui attaquent la muqueuse intestinale. Dans la colite ulc\u00e9reuse, le gros intestin en particulier devient enflamm\u00e9, entra\u00eenant des diarrh\u00e9es sanglantes et muqueuses (jusqu&rsquo;\u00e0 20 fois par jour), des crampes abdominales, de la fi\u00e8vre et une perte de poids. La maladie de Crohn peut toucher tout l&rsquo;intestin, souvent accompagn\u00e9e de fistules et d&rsquo;abc\u00e8s.<\/p>\n<\/div>\n<aside data-hk=\"00942120a202904\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-mobile Ad-Slot-hor\">\n<div id=\"ad-slot-mobile-hor-3\" data-orientation=\"hor\" data-index=\"3\" data-slot=\"ad-slot\" data-device=\"mobile\"><\/div>\n<\/aside>\n<div data-hk=\"00942120a202a100\" id=\"ernsthafte-erkrankungen-wann-blut-im-stuhl-gef\u00e4hrlich-wird\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Les diverticules, petites projections de la paroi intestinale, sont souvent situ\u00e9s dans le c\u00f4lon sigmo\u00efde et saignent soudainement et abondamment, souvent sans avertissement. Le saignement s&rsquo;arr\u00eate g\u00e9n\u00e9ralement spontan\u00e9ment, mais peut mettre la vie en danger s&rsquo;il continue.<\/p>\n<\/div>\n<div data-hk=\"00942120a202a110\" id=\"ernsthafte-erkrankungen-wann-blut-im-stuhl-gef\u00e4hrlich-wird\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Les polypes, tumeurs b\u00e9nignes dans les intestins, sont souvent asymptomatiques jusqu&rsquo;\u00e0 ce qu&rsquo;ils saignent ou, rarement, deviennent malins. Ils constituent un stade pr\u00e9liminaire du cancer du c\u00f4lon et justifient un d\u00e9pistage r\u00e9gulier.\u200b<\/p>\n<\/div>\n<aside data-hk=\"00942120a202a1204\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-mobile Ad-Slot-hor\">\n<div id=\"ad-slot-mobile-hor-4\" data-orientation=\"hor\" data-index=\"4\" data-slot=\"ad-slot\" data-device=\"mobile\"><\/div>\n<\/aside>\n<div data-hk=\"00942120a202a132\" data-qa-article-image class=\"Article-Image mb-lg\">\n<figure data-hk=\"00942120a202a13300\" class=\"Article-Content-Figure\"><!--$--><!--\/--><!--$--><\/p>\n<div data-hk=\"00942120a202a1330200\" class=\"Image-Container\" data-qa-image-container><\/div>\n<p><!--\/--><!--$--><figcaption data-hk=\"00942120a202a133030\" class=\"Article-Content-Figcaption\"><span data-hk=\"00942120a202a13000\" data-qa-image-caption class=\"Image-Caption\"> <!--$-->Les fissures anales peuvent \u00e9galement \u00eatre \u00e0 l\u2019origine de sang dans les selles (image symbolique).<!--\/--> <\/span><span data-hk=\"00942120a202a13100\" data-qa-image-credit class=\"Image-Credit\"> <!--$-->IMAGO \/ Zoonar<!--\/--> <!--$--><!--\/--><\/span><\/figcaption><!--\/--><\/figure>\n<\/div>\n<div data-hk=\"00942120a202a140\" id=\"weitere-m\u00f6gliche-erkrankungen\" class=\"Html-Block\" data-qa-article-content-text>\n<h2>Autres maladies possibles<\/h2>\n<p>Des selles noires et goudronneuses (m\u00e9l\u00e9na) signalent un saignement dans le tube digestif sup\u00e9rieur : les ulc\u00e8res d&rsquo;estomac caus\u00e9s par Helicobacter pylori ou des analg\u00e9siques, les varices \u0153sophagiennes en cas de cirrhose du foie ou de cancer de l&rsquo;estomac font appara\u00eetre le vieux sang sombre, souvent accompagn\u00e9 de naus\u00e9es et de p\u00e2leur.<\/p>\n<\/div>\n<div data-hk=\"00942120a202a150\" id=\"weitere-m\u00f6gliche-erkrankungen\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Le cancer du c\u00f4lon (cancer colorectal), en particulier au niveau du rectum ou du c\u00f4lon sigmo\u00efde, provoque souvent des sympt\u00f4mes tardifs tels qu&rsquo;un m\u00e9lange de sang, une modification des habitudes intestinales, des douleurs abdominales ou une an\u00e9mie ferriprive. La tendance vers des patients de moins de 50 ans plus jeunes est particuli\u00e8rement alarmante en raison, entre autres, de l&rsquo;alimentation et du manque d&rsquo;exercice. La d\u00e9tection pr\u00e9coce sauve des vies.<\/p>\n<\/div>\n<aside data-hk=\"00942120a202a1604\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-mobile Ad-Slot-hor\">\n<div id=\"ad-slot-mobile-hor-5\" data-orientation=\"hor\" data-index=\"5\" data-slot=\"ad-slot\" data-device=\"mobile\"><\/div>\n<\/aside>\n<aside data-hk=\"00942120a202a1704\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-desktop Ad-Slot-hor Ad-Slot-FC\">\n<div class=\"Ad-Slot-FC-Container\">\n<div class=\"Ad-Slot-FC-Window\">\n<div id=\"ad-slot-desktop-hor-2\" data-orientation=\"hor\" data-index=\"2\" data-slot=\"ad-slot\" data-device=\"desktop\"><\/div>\n<\/div>\n<\/div>\n<\/aside>\n<div data-hk=\"00942120a202a180\" id=\"blut-im-stuhl-wann-sie-zum-arzt-gehen-sollten\" class=\"Html-Block\" data-qa-article-content-text>\n<h2>Sang dans les selles : quand consulter un m\u00e9decin<\/h2>\n<p>Toute pr\u00e9sence de sang dans les selles n\u00e9cessite un examen, quel que soit l&rsquo;\u00e2ge &#8211; surtout s&rsquo;il se produit de mani\u00e8re r\u00e9p\u00e9t\u00e9e, en cas de douleur, de perte de poids, de fi\u00e8vre ou d&rsquo;ant\u00e9c\u00e9dents familiaux de cancer. Le m\u00e9decin de famille commence par une anamn\u00e8se, une analyse de selles, une formule sanguine et, si n\u00e9cessaire, une coloscopie (coloscopie avec biopsie). <\/p>\n<\/div>\n<div data-hk=\"00942120a202a190\" id=\"blut-im-stuhl-wann-sie-zum-arzt-gehen-sollten\" class=\"Html-Block\" data-qa-article-content-text>\n<ul>\n<li>Si une h\u00e9morragie sup\u00e9rieure est suspect\u00e9e : gastroscopie.<\/li>\n<li>Urgence : Saignements abondants, \u00e9tourdissements, faiblesse ? Directement \u00e0 la clinique !\u200b<\/li>\n<\/ul>\n<\/div>\n<aside data-hk=\"00942120a202a2004\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-mobile Ad-Slot-hor\">\n<div id=\"ad-slot-mobile-hor-6\" data-orientation=\"hor\" data-index=\"6\" data-slot=\"ad-slot\" data-device=\"mobile\"><\/div>\n<\/aside>\n<div data-hk=\"00942120a202a210\" id=\"pr\u00e4vention-und-vorbeugung\" class=\"Html-Block\" data-qa-article-content-text>\n<h2>Pr\u00e9vention et pr\u00e9vention<\/h2>\n<ul>\n<li>\u00c9vitez la constipation gr\u00e2ce \u00e0 l\u2019exercice, \u00e0 une alimentation riche en fibres et \u00e0 des liquides. Cela prot\u00e8ge contre les h\u00e9morro\u00efdes et les diverticules.<\/li>\n<li>Arr\u00eatez de fumer, mod\u00e9rez l&rsquo;alcool, r\u00e9duisez l&rsquo;exc\u00e8s de poids.<\/li>\n<li>\u00c0 partir de 50 ans (auparavant dans les groupes \u00e0 risque), des examens de selles tous les deux ans et une coloscopie tous les 10 ans : ils r\u00e9duisent le risque de cancer du c\u00f4lon jusqu&rsquo;\u00e0 90 pour cent.<\/li>\n<\/ul>\n<p><strong>Informations compl\u00e9mentaires : <\/strong><\/p>\n<\/div>\n<div data-hk=\"00942120a202a220\" id=\"pr\u00e4vention-und-vorbeugung\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Lignes directrices S2k pour les h\u00e9morragies gastro-intestinales de la Soci\u00e9t\u00e9 allemande de gastroent\u00e9rologie, maladies digestives et m\u00e9taboliques (DGVS)<\/p>\n<\/div>\n<p><!--\/--><br \/>\n<!--$--><br \/>\n<!--\/--><br \/>\n<!--$--><br \/>\n<!--\/--><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Table des mati\u00e8res Les h\u00e9morro\u00efdes sont la cause la plus fr\u00e9quente de sang dans les<\/p>\n","protected":false},"author":1,"featured_media":15009,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[7959,44,49,404,1236,6903,1534,4746],"class_list":["post-15008","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-les-maladies","tag-consulter","tag-dans","tag-les","tag-maladies","tag-medecin","tag-quand","tag-sang","tag-selles","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.4 - 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