{"id":17981,"date":"2026-01-15T09:58:54","date_gmt":"2026-01-15T14:58:54","guid":{"rendered":"https:\/\/eczemahelp.ca\/?p=17981"},"modified":"2026-04-17T10:42:35","modified_gmt":"2026-04-17T14:42:35","slug":"comprendre-les-interactions-neuro-immunes-dans-la-dermatite-atopique","status":"publish","type":"post","link":"https:\/\/eczemahelp.ca\/fr\/comprendre-les-interactions-neuro-immunes-dans-la-dermatite-atopique\/","title":{"rendered":"Comprendre les interactions neuro-immunes dans la dermatite atopique"},"content":{"rendered":"<h2>Comprendre les interactions neuro-immunes dans la dermatite atopique<img fetchpriority=\"high\" class=\"alignright wp-image-17974\" src=\"https:\/\/eczemahelp.ca\/wp-content\/uploads\/2025\/12\/Neuroimmune-300x184.webp\" alt=\"\" width=\"400\" height=\"245\" srcset=\"https:\/\/eczemahelp.ca\/wp-content\/uploads\/2025\/12\/Neuroimmune-300x184.webp 300w, https:\/\/eczemahelp.ca\/wp-content\/uploads\/2025\/12\/Neuroimmune-768x470.webp 768w, https:\/\/eczemahelp.ca\/wp-content\/uploads\/2025\/12\/Neuroimmune.webp 800w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><\/h2>\n<h3>Que sont les interactions neuro-immunes? Et quelle importance rev\u00eatent-elles pour la prise en charge de la dermatite atopique?<\/h3>\n<p><span style=\"font-weight: 400;\">Notre compr\u00e9hension de la dermatite atopique (DA), la forme la plus courante de l\u2019ecz\u00e9ma, a rapidement \u00e9volu\u00e9. On a \u00e9tabli par le pass\u00e9 que la DA \u00e9tait une affection cutan\u00e9e inflammatoire. Cependant, jusqu\u2019\u00e0 tout r\u00e9cemment, ses causes exactes restaient largement m\u00e9connues. Ces vingt derni\u00e8res ann\u00e9es nous ont permis d\u2019en apprendre beaucoup sur la barri\u00e8re cutan\u00e9e, notamment sur la mani\u00e8re dont une barri\u00e8re \u00ab\u00a0perm\u00e9able\u00a0\u00bb favorise la p\u00e9n\u00e9tration d\u2019irritants et la perte d\u2019hydratation.<\/span> <span style=\"font-weight: 400;\">Plus r\u00e9cemment, nous sommes parvenus \u00e0 mieux comprendre le r\u00f4le que joue le d\u00e9r\u00e8glement du syst\u00e8me immunitaire dans cette affection. \u00c0 pr\u00e9sent, nous cherchons \u00e0 approfondir nos connaissances \u00e0 propos des interactions neuro-immunes, c\u2019est-\u00e0-dire la communication entre les syst\u00e8mes nerveux et immunitaire, associ\u00e9es \u00e0 la DA.\u00a0\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">La Soci\u00e9t\u00e9 canadienne de l\u2019ecz\u00e9ma (SCE) s\u2019est tourn\u00e9e vers le D<\/span><span style=\"font-weight: 400;\">r<\/span><span style=\"font-weight: 400;\">\u00a0Mark Kirchhof, un dermatologue de la r\u00e9gion d\u2019Ottawa titulaire d\u2019un doctorat en immunologie, afin d\u2019en apprendre davantage sur ce concept.<\/span><\/p>\n<h3>R\u00f4le du syst\u00e8me immunitaire<\/h3>\n<p><span style=\"font-weight: 400;\">Le syst\u00e8me immunitaire a pour mission de prot\u00e9ger l\u2019organisme contre les germes et les allerg\u00e8nes. Chez les personnes atteintes d\u2019ecz\u00e9ma, le syst\u00e8me immunitaire peut r\u00e9agir de mani\u00e8re excessive \u00e0 ces irritants, et cette r\u00e9action excessive (ou hyperactivit\u00e9) provoque des pouss\u00e9es de DA qui sont caract\u00e9ris\u00e9es par une inflammation de la peau, des rougeurs et des d\u00e9mangeaisons intenses.<\/span><\/p>\n<h3>R\u00f4le du syst\u00e8me nerveux<\/h3>\n<p><span style=\"font-weight: 400;\">Chez les personnes atteintes de DA, la r\u00e9action excessive du syst\u00e8me immunitaire provoque des d\u00e9mangeaisons cutan\u00e9es, auxquelles s\u2019ajoute l\u2019action du syst\u00e8me nerveux. Ce dernier envoie des signaux au cerveau qui d\u00e9clenchent le grattage, donnant naissance au cycle \u00ab\u00a0d\u00e9mangeaison-grattage\u00a0\u00bb caract\u00e9ristique de la DA. Une inflammation se produit, g\u00e9n\u00e9rant la d\u00e9mangeaison et l\u2019impulsion de se gratter, ce qui conduit \u00e0 des grattages r\u00e9p\u00e9t\u00e9s pouvant aggraver le cycle des pouss\u00e9es.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Les recherches montrent \u00e9galement que le stress et l\u2019anxi\u00e9t\u00e9 peuvent provoquer une r\u00e9ponse immunitaire, aggravant ainsi la DA. Sous l\u2019effet de cette affection, le syst\u00e8me nerveux peut devenir plus sensible et inciter le cerveau \u00e0 provoquer le grattage, m\u00eame lorsque les d\u00e9mangeaisons sont \u00ab\u00a0minimes\u00a0\u00bb. Nous savons aussi que, chez les personnes atteintes de DA, la peau est extr\u00eamement sensible, la r\u00e9action aux d\u00e9mangeaisons est amplifi\u00e9e et l\u2019impulsion de se gratter se veut b\u00e9n\u00e9fique, comme elle r\u00e9sulte d\u2019un m\u00e9canisme de d\u00e9fense de l\u2019organisme qui tente d\u2019\u00e9liminer les envahisseurs.<\/span><\/p>\n<h3>Qu\u2019est-ce qui cause la dermatite atopique?<\/h3>\n<p><span style=\"font-weight: 400;\">Nous savons \u00e0 pr\u00e9sent que la DA est caus\u00e9e par une combinaison de facteurs, dont l\u2019alt\u00e9ration de la barri\u00e8re cutan\u00e9e, l\u2019hyperactivit\u00e9 du syst\u00e8me immunitaire et l\u2019hypersensibilit\u00e9 des nerfs cutan\u00e9s.<\/span><\/p>\n<h3>Qu\u2019est-ce que cela signifie pour la prise en charge de la DA?<\/h3>\n<p><span style=\"font-weight: 400;\">Comprendre ce qui cause la DA peut nous aider \u00e0 mieux prendre en charge l\u2019affection et ses pouss\u00e9es. Nous pouvons renforcer la barri\u00e8re cutan\u00e9e gr\u00e2ce \u00e0 des bains et \u00e0 des soins hydratants appropri\u00e9s. Nous pouvons \u00e9galement prendre en charge les pouss\u00e9es lorsqu\u2019elles surviennent gr\u00e2ce \u00e0 un traitement topique. Lorsque la DA est plus s\u00e9v\u00e8re ou lorsqu\u2019aucune am\u00e9lioration n\u2019est observ\u00e9e, nous pouvons traiter l\u2019hyperactivit\u00e9 du syst\u00e8me immunitaire et le syst\u00e8me nerveux \u00e0 l\u2019aide de m\u00e9dicaments avanc\u00e9s qu\u2019un sp\u00e9cialiste, comme un dermatologue, peut recommander.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Il importe en outre que les patients et leurs aidants comprennent que cette diff\u00e9rence dans les sensations cutan\u00e9es a des r\u00e9percussions concr\u00e8tes sur la vie quotidienne des personnes aux prises avec la DA. Ces derni\u00e8res peuvent pr\u00e9senter une sensibilit\u00e9 accrue aux variations de temp\u00e9rature et aux stimuli cutan\u00e9s, tels que le frottement des tissus ou le toucher. L\u2019application de cr\u00e8mes hydratantes ou de traitements topiques peut aussi provoquer un certain inconfort.<\/span><\/p>\n<h3>Que pouvons-nous faire?<\/h3>\n<p><span style=\"font-weight: 400;\">Par chance, les patients n\u2019ont pas \u00e0 souffrir\u00a0: un sp\u00e9cialiste, comme un dermatologue, peut les aider.<\/span><\/p>\n<p>La Soci\u00e9t\u00e9 canadienne de l\u2019ecz\u00e9ma tient \u00e0 remercier le dermatologue Mark Kirchhof (M.D., FRCPC) pour son pr\u00e9cieux apport \u00e0 ce contenu \u00e9ducatif.<\/p>\n<p>Ce contenu a \u00e9t\u00e9 \u00e9labor\u00e9 dans le cadre du programme \u00e9ducatif de 2025 \u00ab\u00a0Vivre avec l\u2019ecz\u00e9ma\u00a0\u00bb.<\/p>\n<p><i><span style=\"font-weight: 400;\"><strong>Avis de non-responsabilit\u00e9<\/strong> : L\u2019information contenue dans cette ressource ne remplace pas les conseils d\u2019un m\u00e9decin et ne doit pas servir d\u2019outil diagnostique. L\u2019information \u00e9tait \u00e0 jour \u00e0 la date de publication. Les interventions, les m\u00e9dicaments et les plans de traitement sont tous associ\u00e9s \u00e0 des risques et \u00e0 des bienfaits. Il est donc important de discuter de ses besoins particuliers ou de ceux de son enfant avec un professionnel de la sant\u00e9 qualifi\u00e9.<\/span><\/i><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Comprendre les interactions neuro-immunes dans la dermatite atopique Que sont les interactions neuro-immunes? Et quelle importance rev\u00eatent-elles pour la prise en charge de la dermatite atopique? Notre compr\u00e9hension de la dermatite atopique (DA), la forme la plus courante de l\u2019ecz\u00e9ma, a rapidement \u00e9volu\u00e9. On a \u00e9tabli par le pass\u00e9 que la DA \u00e9tait une affection [&hellip;]<\/p>\n","protected":false},"author":21,"featured_media":17980,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[272,48],"tags":[],"class_list":["post-17981","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-campagne-la-vie-avec-leczema","category-un-medecin-vous-parle"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Comprendre les interactions neuro-immunes dans la dermatite atopique | Eczema Society of Canada<\/title>\n<meta name=\"description\" content=\"Comprendre les interactions neuro-immunes dans l&#039;ecz\u00e9ma et le r\u00f4le des syst\u00e8mes nerveux et immunitaire dans les d\u00e9mangeaisons, l\u2019inflammation et les pouss\u00e9es.\" 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