{"id":2833,"date":"2026-01-29T17:21:29","date_gmt":"2026-01-29T14:21:29","guid":{"rendered":"https:\/\/wiki.voka.io\/diseases\/uncategorized\/roseole-infantile\/"},"modified":"2026-01-30T12:40:31","modified_gmt":"2026-01-30T09:40:31","slug":"roseole-infantile","status":"publish","type":"diseases_post","link":"https:\/\/wiki.voka.io\/fr\/maladies\/pediatrie\/roseole-infantile\/","title":{"rendered":"Ros\u00e9ole infantile, ou exanth\u00e8me subit : \u00e9tiologie, physiopathologie, clinique, diagnostic, traitement, pr\u00e9vention"},"content":{"rendered":"<p>La ros\u00e9ole infantile constitue l\u2019une des infections les plus fr\u00e9quentes de l\u2019enfance et est observ\u00e9e dans le monde entier. <\/p>\n<p>Dans la litt\u00e9rature m\u00e9dicale, la ros\u00e9ole est d\u00e9sign\u00e9e sous les termes suivants : exanth\u00e8me subit, fi\u00e8vre de trois jours, pseudorub\u00e9ole, ou encore sixi\u00e8me maladie. <\/p>\n<p>Cliniquement, la ros\u00e9ole infantile se caract\u00e9rise par une \u00e9l\u00e9vation de la temp\u00e9rature corporelle pendant 3 jours en l\u2019absence d\u2019autres sympt\u00f4mes, suivie de l\u2019apparition d\u2019une \u00e9ruption cutan\u00e9e sur le tronc sous forme de petites macules. La majorit\u00e9 des enfants sont infect\u00e9s et pr\u00e9sentent la ros\u00e9ole avant l\u2019\u00e2ge de 3 ans sans complications. Avant l\u2019apparition de l\u2019\u00e9ruption caract\u00e9ristique, le diagnostic de ros\u00e9ole infantile est difficile ; toutefois, la connaissance des particularit\u00e9s \u00e9pid\u00e9miologiques et de l\u2019\u00e9volution de l\u2019infection permet de raccourcir significativement le d\u00e9lai de diagnostic correct.<\/p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/articles\/en\/pediatrics\/childhood-roseola\/child-roseola.webp\" alt=\"Ros\u00e9ole infantile\"><figcaption class=\"wp-element-caption\">Ros\u00e9ole infantile<\/figcaption><\/figure>\n<h2 class=\"wp-block-heading\" id=\"etiologie-et-epidemiologie\">\u00c9tiologie et \u00e9pid\u00e9miologie<\/h2>\n<p>Dans la plupart des cas, l\u2019agent responsable de la fi\u00e8vre de trois jours est le virus herp\u00e8s humain de type 6 (HHV-6), plus rarement le virus herp\u00e8s humain de type 7 (HHV-7). <\/p>\n<p>Plus de 90 % de la population adulte mondiale est infect\u00e9e par le HHV-6, une partie de ces individus excr\u00e9tant le virus dans la salive et contribuant \u00e0 sa transmission. Le pic d\u2019infection survient entre les 3 et 9 premiers mois de vie. <\/p>\n<p>Le virus herp\u00e8s humain de type 6 (HHV-6) se divise en deux sous-types \u2014 HHV-6A et HHV-6B \u2014 qui diff\u00e8rent par leurs propri\u00e9t\u00e9s biologiques, immunologiques, \u00e9pid\u00e9miologiques et mol\u00e9culaires.  L\u2019agent de l\u2019exanth\u00e8me subit est le HHV-6B, tandis que l\u2019infection \u00e0 HHV-6A est plus fr\u00e9quente chez les adultes ou les personnes immunod\u00e9prim\u00e9es.  Ces agents appartiennent \u00e0 la famille des Herpesviridae et pr\u00e9sentent les m\u00eames caract\u00e9ristiques que les autres herp\u00e8svirus. <\/p>\n<p>En r\u00e8gle g\u00e9n\u00e9rale, l\u2019infection primaire survient lors du contact de l\u2019enfant avec une personne soignante pr\u00e9sentant une infection latente.  Le virus est excr\u00e9t\u00e9 dans la salive et se transmet par voie a\u00e9rienne et par contact (\u00e9ternuements, toux, rires, baisers). <\/p>\n<p>La p\u00e9riode d\u2019incubation est en moyenne de 5 \u00e0 15 jours.<\/p>\n<h2 class=\"wp-block-heading\" id=\"physiopathologie\">Physiopathologie<\/h2>\n<p>Lors de l\u2019infection primaire, le virus herp\u00e8s humain de type 6 se r\u00e9plique principalement dans les lymphocytes et les cellules des glandes salivaires. Il infecte pr\u00e9f\u00e9rentiellement les lymphocytes T CD4+ matures et exerce un effet immunomodulateur en augmentant l\u2019activit\u00e9 des cellules tueuses naturelles (NK cells). <\/p>\n<p>En r\u00e9ponse, l\u2019organisme augmente la synth\u00e8se d\u2019interleukine-15 (IL-15) par d\u2019autres cellules, ce qui contrebalance l\u2019effet du virus sur le syst\u00e8me immunitaire.  Apr\u00e8s p\u00e9n\u00e9tration intracellulaire, le virus se r\u00e9plique et son ADN persiste de mani\u00e8re prolong\u00e9e dans les cellules mononucl\u00e9\u00e9es du sang p\u00e9riph\u00e9rique, pouvant entra\u00eener une infection latente \u00e0 vie.<\/p>\n<h2 class=\"wp-block-heading\" id=\"manifestations-cliniques\">Manifestations cliniques<\/h2>\n<p>Le tableau clinique classique de la ros\u00e9ole infantile comprend :<\/p>\n<ul class=\"wp-block-list\">\n<li><strong>Une fi\u00e8vre atteignant 40 \u00b0C<\/strong> ou plus pendant 3 \u00e0 5 jours, souvent difficile \u00e0 contr\u00f4ler par les antipyr\u00e9tiques. L\u2019enfant peut rester relativement actif et conserver un bon app\u00e9tit ;<\/li>\n<li><strong>Une \u00e9ruption maculo-papuleuse fine <\/strong>, apparaissant 3 \u00e0 5 jours apr\u00e8s le d\u00e9but de la fi\u00e8vre. L\u2019\u00e9ruption consiste habituellement en macules ou papules roses rondes de 2 \u00e0 3 mm de diam\u00e8tre, disparaissant \u00e0 la vitropression. Les l\u00e9sions apparaissent d\u2019abord sur le tronc, puis s\u2019\u00e9tendent au cou et aux membres.  L\u2019\u00e9ruption r\u00e9gresse spontan\u00e9ment en 2 \u00e0 4 jours.<\/li>\n<\/ul>\n<div class=\"carousel-block\">\n<div class=\"swiper carousel-swiper carousel-swiper-block_69dfcabc44f69\">\n<div class=\"swiper-wrapper\">\n<div class=\"swiper-slide\"><img decoding=\"async\" class=\"carousel-image\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/articles\/en\/pediatrics\/childhood-roseola\/child-roseola-back.webp\" alt=\"\u00c9ruption ros\u00e9oliforme chez l\u2019enfant dans le dos\"><span class=\"small-text-article text-main-text-color\">\u00c9ruption ros\u00e9oliforme chez l\u2019enfant dans le dos<\/span><\/div>\n<div class=\"swiper-slide\"><img decoding=\"async\" class=\"carousel-image\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/articles\/en\/pediatrics\/childhood-roseola\/erythema-infectiosum-close.webp\" alt=\"\u00c9ruption ros\u00e9oliforme chez l\u2019enfant sur l\u2019abdomen\"><span class=\"small-text-article text-main-text-color\">\u00c9ruption ros\u00e9oliforme chez l\u2019enfant sur l\u2019abdomen<\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"swiper-article-carousel__controls\">\n<div class=\"swiper-article-carousel__pagination-container swiper-article-carousel__pagination-container-block_69dfcabc44f69\"><\/div>\n<div class=\"swiper-article-carousel__arrows\"><button class=\"swiper__arrow swiper__arrow--prev carousel-swiper-button-prev swiper__arrow swiper__arrow--prev carousel-swiper-button-prev-block_69dfcabc44f69\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"40\" height=\"40\" viewbox=\"0 0 40 40\" fill=\"none\"><path d=\"M20 3.75C16.7861 3.75 13.6443 4.70305 10.972 6.48862C8.29969 8.27419 6.21689 10.8121 4.98696 13.7814C3.75704 16.7507 3.43524 20.018 4.06225 23.1702C4.68926 26.3224 6.23692 29.2179 8.50952 31.4905C10.7821 33.7631 13.6776 35.3107 16.8298 35.9378C19.982 36.5648 23.2493 36.243 26.2186 35.013C29.1879 33.7831 31.7258 31.7003 33.5114 29.028C35.297 26.3557 36.25 23.2139 36.25 20C36.2455 15.6916 34.5319 11.561 31.4855 8.51454C28.439 5.46806 24.3084 3.75455 20 3.75ZM23.3844 25.3656C23.5005 25.4818 23.5926 25.6196 23.6555 25.7714C23.7184 25.9231 23.7507 26.0858 23.7507 26.25C23.7507 26.4142 23.7184 26.5769 23.6555 26.7286C23.5926 26.8804 23.5005 27.0182 23.3844 27.1344C23.2682 27.2505 23.1304 27.3426 22.9786 27.4055C22.8269 27.4683 22.6643 27.5007 22.5 27.5007C22.3358 27.5007 22.1731 27.4683 22.0214 27.4055C21.8696 27.3426 21.7318 27.2505 21.6156 27.1344L15.3656 20.8844C15.2494 20.7683 15.1572 20.6304 15.0943 20.4787C15.0314 20.3269 14.999 20.1643 14.999 20C14.999 19.8357 15.0314 19.6731 15.0943 19.5213C15.1572 19.3696 15.2494 19.2317 15.3656 19.1156L21.6156 12.8656C21.7318 12.7495 21.8696 12.6574 22.0214 12.5945C22.1731 12.5317 22.3358 12.4993 22.5 12.4993C22.6643 12.4993 22.8269 12.5317 22.9786 12.5945C23.1304 12.6574 23.2682 12.7495 23.3844 12.8656C23.5005 12.9818 23.5926 13.1196 23.6555 13.2714C23.7184 13.4231 23.7507 13.5858 23.7507 13.75C23.7507 13.9142 23.7184 14.0769 23.6555 14.2286C23.5926 14.3804 23.5005 14.5182 23.3844 14.6344L18.0172 20L23.3844 25.3656Z\" fill=\"#B5C0CD\"><\/path><\/svg><\/button><button class=\"swiper__arrow swiper__arrow--next carousel-swiper-button-next swiper__arrow swiper__arrow--next carousel-swiper-button-next-block_69dfcabc44f69\" tabindex=\"0\" aria-label=\"Next slide\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"40\" height=\"40\" viewbox=\"0 0 40 40\" fill=\"none\"><path d=\"M20 3.75C16.7861 3.75 13.6443 4.70305 10.972 6.48862C8.29969 8.27419 6.21689 10.8121 4.98696 13.7814C3.75704 16.7507 3.43524 20.018 4.06225 23.1702C4.68926 26.3224 6.23692 29.2179 8.50952 31.4905C10.7821 33.7631 13.6776 35.3107 16.8298 35.9378C19.982 36.5648 23.2493 36.243 26.2186 35.013C29.1879 33.7831 31.7258 31.7003 33.5114 29.028C35.297 26.3557 36.25 23.2139 36.25 20C36.2455 15.6916 34.5319 11.561 31.4855 8.51454C28.439 5.46806 24.3084 3.75455 20 3.75ZM23.3844 25.3656C23.5005 25.4818 23.5926 25.6196 23.6555 25.7714C23.7184 25.9231 23.7507 26.0858 23.7507 26.25C23.7507 26.4142 23.7184 26.5769 23.6555 26.7286C23.5926 26.8804 23.5005 27.0182 23.3844 27.1344C23.2682 27.2505 23.1304 27.3426 22.9786 27.4055C22.8269 27.4683 22.6643 27.5007 22.5 27.5007C22.3358 27.5007 22.1731 27.4683 22.0214 27.4055C21.8696 27.3426 21.7318 27.2505 21.6156 27.1344L15.3656 20.8844C15.2494 20.7683 15.1572 20.6304 15.0943 20.4787C15.0314 20.3269 14.999 20.1643 14.999 20C14.999 19.8357 15.0314 19.6731 15.0943 19.5213C15.1572 19.3696 15.2494 19.2317 15.3656 19.1156L21.6156 12.8656C21.7318 12.7495 21.8696 12.6574 22.0214 12.5945C22.1731 12.5317 22.3358 12.4993 22.5 12.4993C22.6643 12.4993 22.8269 12.5317 22.9786 12.5945C23.1304 12.6574 23.2682 12.7495 23.3844 12.8656C23.5005 12.9818 23.5926 13.1196 23.6555 13.2714C23.7184 13.4231 23.7507 13.5858 23.7507 13.75C23.7507 13.9142 23.7184 14.0769 23.6555 14.2286C23.5926 14.3804 23.5005 14.5182 23.3844 14.6344L18.0172 20L23.3844 25.3656Z\" fill=\"#B5C0CD\"><\/path><\/svg><\/button><\/div>\n<\/div>\n<\/div>\n<p><script defer>\n    document.addEventListener('DOMContentLoaded', function() {\n        const imagesCarouselSwiper = new Swiper('.carousel-swiper-block_69dfcabc44f69', {\n            slidesPerView: 1,\n            spaceBetween: 20,\n            loop: true,\n            pagination: {\n                el: '.swiper-article-carousel__pagination-container-block_69dfcabc44f69',\n                clickable: true,\n            },\n            navigation: {\n                nextEl: '.carousel-swiper-button-next-block_69dfcabc44f69',\n                prevEl: '.carousel-swiper-button-prev-block_69dfcabc44f69',\n            },\n        })\n    })\n<\/script><\/p>\n<p><strong>Plus rarement, <\/strong> lors de la ros\u00e9ole infantile, on observe :<\/p>\n<ul class=\"wp-block-list\">\n<li>Une inflammation des voies respiratoires sup\u00e9rieures \u2014 pharyngite, pharyngo-amygdalite, trach\u00e9ite, etc. Dans certains cas, des taches de Nagayama \u2014 macules rouges sur le voile du palais \u2014 peuvent \u00eatre observ\u00e9es.<\/li>\n<li>Une otite moyenne.<\/li>\n<li>Une lymphad\u00e9nopathie \u2014 augmentation des ganglions lymphatiques p\u00e9riph\u00e9riques. <\/li>\n<\/ul>\n<p><strong>Complications<\/strong>\u00a0:<\/p>\n<ul class=\"wp-block-list\">\n<li>Convulsions f\u00e9briles.<\/li>\n<li>Thrombocytop\u00e9nie \u2014 diminution du nombre de plaquettes dans le sang p\u00e9riph\u00e9rique.<\/li>\n<li>Syndrome de Guillain-Barr\u00e9 \u2014 polyradiculon\u00e9vrite apparaissant 1 \u00e0 4 semaines apr\u00e8s l\u2019infection.<\/li>\n<li>H\u00e9patite.<\/li>\n<li>Enc\u00e9phalite, m\u00e9ningo-enc\u00e9phalite.<\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\" id=\"diagnostic-de-la-roseole-infantile\">Diagnostic de la ros\u00e9ole infantile<\/h2>\n<p>En g\u00e9n\u00e9ral, le diagnostic de ros\u00e9ole infantile est pos\u00e9 cliniquement par le m\u00e9decin et ne n\u00e9cessite pas d\u2019examens biologiques. <\/p>\n<p>Lorsque la confirmation de l\u2019agent causal est requise, la m\u00e9thode de la r\u00e9action en cha\u00eene par polym\u00e9rase (PCR) est largement utilis\u00e9e pour d\u00e9tecter l\u2019ADN viral dans le sang, la salive ou les \u00e9couvillonnages Plus rarement, une s\u00e9rologie sanguine (IgM, IgG) dirig\u00e9e contre le virus est r\u00e9alis\u00e9e.<\/p>\n<h3 class=\"wp-block-heading\" id=\"diagnostic-differentiel\">Diagnostic diff\u00e9rentiel<\/h3>\n<p>La ros\u00e9ole infantile doit \u00eatre diff\u00e9renci\u00e9e des affections et \u00e9tats suivants :<\/p>\n<ul class=\"wp-block-list\">\n<li><span class=\"glossary-term\" data-title=\"Rougeole\" data-tooltip=\"La rougeole (lat. morbilli) est une maladie virale aigu\u00eb hautement contagieuse qui se caract\u00e9rise par une \u00e9volution cyclique, une intoxication, une inflammation catarrhale des muqueuses des voies respiratoires et des yeux, ainsi qu&#039;une \u00e9ruption cutan\u00e9e maculo-papuleuse. L&#039;agent pathog\u00e8ne est un virus \u00e0 ARN du genre Morbillivirus.\" data-link=\"https:\/\/wiki.voka.io\/fr\/glossaire\/rougeole\/\">Rougeole<\/span>;<\/li>\n<li>Rub\u00e9ole ;<\/li>\n<li><span class=\"glossary-term\" data-title=\"Scarlatine\" data-tooltip=\"La scarlatine (du latin scarlatum, \u00ab&nbsp;\u00e9carlate&nbsp;\u00bb) est une maladie infectieuse aig\u00fce qui constitue l&#039;une des formes cliniques de l&#039;infection streptococcique. La maladie est caus\u00e9e par le streptocoque b\u00eata-h\u00e9molytique du groupe&nbsp;A (SBHA), qui produit la toxine \u00e9rythrog\u00e8ne (scarlatineuse) de Dick.\" data-link=\"https:\/\/wiki.voka.io\/fr\/glossaire\/scarlatine\/\">Scarlatine<\/span>;<\/li>\n<li>\u00c9ruption m\u00e9dicamenteuse ;<\/li>\n<li>\u00c9ruption allergique ;<\/li>\n<li><span class=\"glossary-term\" data-title=\"Mononucl\u00e9ose infectieuse\" data-tooltip=\"La mononucl\u00e9ose infectieuse est une maladie virale aigu\u00eb principalement caus\u00e9e par le virus Epstein-Barr (EBV). Elle se manifeste par de la fi\u00e8vre, des l\u00e9sions de l&#039;oropharynx (angine), une hypertrophie des n\u0153uds lymphatiques, du foie et de la rate, ainsi que par l&#039;apparition de cellules sp\u00e9cifiques dans le sang, dites \u00ab mononucl\u00e9aires atypiques \u00bb.\" data-link=\"https:\/\/wiki.voka.io\/fr\/glossaire\/mononucleose-infectieuse\/\">Mononucl\u00e9ose infectieuse<\/span> (infection \u00e0 virus Epstein-Barr) ;<\/li>\n<li>Infection \u00e0 cytom\u00e9galovirus ;<\/li>\n<li>Infection \u00e0 parvovirus (infection \u00e0 parvovirus B19).<\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\" id=\"traitement-de-la-roseole-infantile\">Traitement de la ros\u00e9ole infantile<\/h2>\n<p>Dans la majorit\u00e9 des cas, la ros\u00e9ole infantile \u00e9volue spontan\u00e9ment et ne n\u00e9cessite pas de traitement sp\u00e9cifique.<br \/>Lors du diagnostic de ros\u00e9ole infantile, le m\u00e9decin doit expliquer \u00e0 la personne qui prend soin de l\u2019enfant les situations n\u00e9cessitant une nouvelle consultation m\u00e9dicale et les modalit\u00e9s appropri\u00e9es de prise en charge de l\u2019enfant.<\/p>\n<p>Situations<strong>n\u00e9cessitant une consultation m\u00e9dicale imm\u00e9diate : <\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li>Confusion mentale, somnolence pathologique ;<\/li>\n<li>Fi\u00e8vre non contr\u00f4l\u00e9e par les antipyr\u00e9tiques ;<\/li>\n<li>Apparition de convulsions ;<\/li>\n<li>Apparition d\u2019une \u00e9ruption p\u00e9t\u00e9chiale ou purpurique \u2014 \u00e9ruption ne disparaissant pas \u00e0 la vitropression ;<\/li>\n<li>Vomissements sans soulagement ;<\/li>\n<li>Ict\u00e8re des scl\u00e8res et des t\u00e9guments ;<\/li>\n<li>Modification de la couleur des urines ;<\/li>\n<li><span class=\"glossary-term\" data-title=\"\u0152d\u00e8me\" data-tooltip=\"L&#039;\u0153d\u00e8me est une accumulation excessive de liquide dans les espaces intercellulaires (interstitiels) des tissus ou dans les cavit\u00e9s s\u00e9reuses du corps. Cliniquement, il se manifeste par un gonflement, une augmentation de volume d&#039;un organe ou d&#039;une partie du corps. \" data-link=\"https:\/\/wiki.voka.io\/fr\/glossaire\/oedeme\/\">\u0152d\u00e8mes<\/span>.<\/li>\n<\/ul>\n<p><strong>Le traitement symptomatique<\/strong> repose sur :<\/p>\n<ul class=\"wp-block-list\">\n<li>La r\u00e9duction de la fi\u00e8vre ;<\/li>\n<li>L\u2019hygi\u00e8ne nasale ; <\/li>\n<li>Une r\u00e9hydratation ad\u00e9quate.<\/li>\n<\/ul>\n<div class=\"social-banner-block\">\n<div class=\"social-banner-content\">\n<p class=\"h5-title text-black\">Retrouvez d\u2019autres contenus scientifiquement exacts sur nos m\u00e9dias sociaux<\/p>\n<p><span class=\"social-banner-text text-grey\">Abonnez-vous et ne manquez pas les derni\u00e8res ressources<\/span><\/p>\n<div class=\"social-links-wrapper\"><a class=\"social-icon-link\" href=\"https:\/\/www.facebook.com\/VOKA3DAnatomyAndPathology\/\" target=\"_blank\" rel=\"nofollow noopener\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/Social%20Icons\/facebook.svg\" alt=\"social link\"><\/a><a class=\"social-icon-link\" href=\"https:\/\/www.instagram.com\/voka.io\/\" target=\"_blank\" rel=\"nofollow noopener\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/Social%20Icons\/insta.svg\" alt=\"social link\"><\/a><a class=\"social-icon-link\" href=\"https:\/\/www.linkedin.com\/company\/voka-io\/posts\/?feedView=all\" target=\"_blank\" rel=\"nofollow noopener\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/Social%20Icons\/linkedin.svg\" alt=\"social link\"><\/a><a class=\"social-icon-link\" href=\"https:\/\/www.youtube.com\/@vokaio\" target=\"_blank\" rel=\"nofollow noopener\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/Social%20Icons\/youtube.svg\" alt=\"social link\"><\/a><a class=\"social-icon-link\" href=\"https:\/\/www.pinterest.com\/voka3danatomyandpathology\/\" target=\"_blank\" rel=\"nofollow noopener\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/Social%20Icons\/pinterest.svg\" alt=\"social link\"><\/a><a class=\"social-icon-link\" href=\"https:\/\/www.tiktok.com\/@voka.io\" target=\"_blank\" rel=\"nofollow noopener\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/Social%20Icons\/tiktok.svg\" alt=\"social link\"><\/a><a class=\"social-icon-link\" href=\"https:\/\/discord.gg\/7ejUpq8DRR\" target=\"_blank\" rel=\"nofollow noopener\"><img decoding=\"async\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/Social%20Icons\/discord.svg\" alt=\"social link\"><\/a><\/div>\n<\/div>\n<p><img decoding=\"async\" class=\"social-banner-image\" loading=\"lazy\" src=\"https:\/\/storage.googleapis.com\/dev_wiki_voka_io_303011\/common\/social-media-banner-mobile-image.webp\" alt=\"Banner background\"><\/div>\n<h2 class=\"wp-block-heading\" id=\"prevention-de-l-exantheme-subit-chez-l-enfant\">Pr\u00e9vention de l\u2019exanth\u00e8me subit chez l\u2019enfant<\/h2>\n<p>Il n\u2019existe pas de pr\u00e9vention sp\u00e9cifique (vaccination) contre le HHV-6 et le HHV-7.<\/p>\n<p><strong>Les mesures de pr\u00e9vention non sp\u00e9cifiques <\/strong> incluent :<\/p>\n<ul class=\"wp-block-list\">\n<li>La limitation des contacts avec les personnes pr\u00e9sentant une ros\u00e9ole active ;<\/li>\n<li>Le respect des r\u00e8gles d\u2019hygi\u00e8ne personnelle.<\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\" id=\"immunite\">Immunit\u00e9<\/h2>\n<p>Apr\u00e8s une ros\u00e9ole infantile, un immunit\u00e9 s\u00e9rologique \u00e0 vie se d\u00e9veloppe. Des cas rares de r\u00e9infection ont \u00e9t\u00e9 d\u00e9crits, principalement chez les personnes immunod\u00e9prim\u00e9es.<\/p>\n<div>\n<h2 class=\"faq-title h2-article\" id=\"faq\">FAQ<\/h2>\n<div class=\"faq-section\">\n<div class=\"faq-item faq-answer-hidden\">\n<div class=\"question-block\">\n<div class=\"faq-question\">\n<p class=\" text-black h5-title\">Qu\u2019est-ce que la ros\u00e9ole infantile et quelles en sont les causes ? <\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">La ros\u00e9ole infantile (exanth\u00e8me subit) est une infection virale aigu\u00eb touchant principalement les jeunes enfants (de 6 mois \u00e0 3 ans). Elle est caus\u00e9e par l\u2019infection primaire par le virus herp\u00e8s humain de type 6 (HHV-6B), plus rarement par le type 7.<\/div>\n<\/div>\n<div class=\"expand-button-wrapper\"><button class=\"text-accent expand-button\">+<\/button><\/div>\n<\/div>\n<div class=\"faq-item faq-answer-hidden\">\n<div class=\"question-block\">\n<div class=\"faq-question\">\n<p class=\" text-black h5-title\">Comment \u00e9volue la ros\u00e9ole infantile et quels sont ses sympt\u00f4mes ? <\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">La maladie \u00e9volue en deux phases. La premi\u00e8re est marqu\u00e9e par une \u00e9l\u00e9vation brutale de la temp\u00e9rature \u00e0 39\u201340 \u00b0C pendant 3\u20135 jours. Les signes catarrhaux (toux, rhinorrh\u00e9e) sont g\u00e9n\u00e9ralement absents et l\u2019enfant reste actif.  La seconde phase survient imm\u00e9diatement apr\u00e8s la d\u00e9fervescence : apparition d\u2019une \u00e9ruption maculeuse rose qui s\u2019\u00e9tend du tronc aux membres et dispara\u00eet sans s\u00e9quelles en quelques jours.<\/div>\n<\/div>\n<div class=\"expand-button-wrapper\"><button class=\"text-accent expand-button\">+<\/button><\/div>\n<\/div>\n<div class=\"faq-item faq-answer-hidden\">\n<div class=\"question-block\">\n<div class=\"faq-question\">\n<p class=\" text-black h5-title\">Comment se transmet l\u2019infection et quelle est sa p\u00e9riode d\u2019incubation ? <\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">Le virus se transmet par voie a\u00e9rienne et par contact (salive lors des baisers, \u00e9ternuements, partage de vaisselle).  La source est le plus souvent un adulte porteur asymptomatique.  La p\u00e9riode d\u2019incubation moyenne est de 5 \u00e0 15 jours.<\/div>\n<\/div>\n<div class=\"expand-button-wrapper\"><button class=\"text-accent expand-button\">+<\/button><\/div>\n<\/div>\n<div class=\"faq-item faq-answer-hidden\">\n<div class=\"question-block\">\n<div class=\"faq-question\">\n<p class=\" text-black h5-title\">Quelle est la dur\u00e9e de la ros\u00e9ole infantile ? <\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">La dur\u00e9e totale de la maladie est d\u2019environ 5 \u00e0 9 jours.  La phase f\u00e9brile dure 3 \u00e0 5 jours, la phase \u00e9ruptive de 2 \u00e0 4 jours.<\/div>\n<\/div>\n<div class=\"expand-button-wrapper\"><button class=\"text-accent expand-button\">+<\/button><\/div>\n<\/div>\n<div class=\"faq-item faq-answer-hidden\">\n<div class=\"question-block\">\n<div class=\"faq-question\">\n<p class=\" text-black h5-title\">La ros\u00e9ole infantile existe-t-elle chez l\u2019adulte ? <\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">Elle est extr\u00eamement rare, car plus de 90 % des adultes ont d\u00e9j\u00e0 \u00e9t\u00e9 infect\u00e9s dans l\u2019enfance et poss\u00e8dent une immunit\u00e9. Chez l\u2019adulte, la maladie peut survenir lors d\u2019une infection primaire (si absence d\u2019ant\u00e9c\u00e9dent) ou en cas d\u2019immunod\u00e9ficience marqu\u00e9e. Les adultes sont plus souvent infect\u00e9s par le sous-type HHV-6A.<\/div>\n<\/div>\n<div class=\"expand-button-wrapper\"><button class=\"text-accent expand-button\">+<\/button><\/div>\n<\/div>\n<div class=\"faq-item faq-answer-hidden\">\n<div class=\"question-block\">\n<div class=\"faq-question\">\n<p class=\" text-black h5-title\">Peut-on contracter la ros\u00e9ole une seconde fois ? <\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">Apr\u00e8s la maladie, une immunit\u00e9 \u00e0 vie se d\u00e9veloppe. Les r\u00e9infections sont exceptionnelles et g\u00e9n\u00e9ralement associ\u00e9es \u00e0 des alt\u00e9rations du syst\u00e8me immunitaire.<\/div>\n<\/div>\n<div class=\"expand-button-wrapper\"><button class=\"text-accent expand-button\">+<\/button><\/div>\n<\/div>\n<div class=\"faq-item faq-answer-hidden\">\n<div class=\"question-block\">\n<div class=\"faq-question\">\n<p class=\" text-black h5-title\">Quelles sont les recommandations cliniques pour le traitement de la ros\u00e9ole ? <\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">Selon les recommandations cliniques, aucun traitement antiviral sp\u00e9cifique n\u2019est requis. Le traitement est symptomatique : administration d\u2019antipyr\u00e9tiques (parac\u00e9tamol, ibuprof\u00e8ne) en cas de malaise important de l\u2019enfant et hydratation abondante pour pr\u00e9venir la d\u00e9shydratation. Les antibiotiques ne sont pas indiqu\u00e9s, la maladie \u00e9tant d\u2019origine virale.<\/div>\n<\/div>\n<div class=\"expand-button-wrapper\"><button class=\"text-accent expand-button\">+<\/button><\/div>\n<\/div>\n<\/div>\n<p><script type=\"application\/ld+json\">\n    {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Qu\u2019est-ce que la ros\u00e9ole infantile et quelles en sont les causes ? \",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"La ros\u00e9ole infantile (exanth\u00e8me subit) est une infection virale aigu\u00eb touchant principalement les jeunes enfants (de 6 mois \u00e0 3 ans). 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La seconde phase survient imm\u00e9diatement apr\u00e8s la d\u00e9fervescence : apparition d\u2019une \u00e9ruption maculeuse rose qui s\u2019\u00e9tend du tronc aux membres et dispara\u00eet sans s\u00e9quelles en quelques jours.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Comment se transmet l\u2019infection et quelle est sa p\u00e9riode d\u2019incubation ? \",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Le virus se transmet par voie a\u00e9rienne et par contact (salive lors des baisers, \u00e9ternuements, partage de vaisselle).  La source est le plus souvent un adulte porteur asymptomatique.  La p\u00e9riode d\u2019incubation moyenne est de 5 \u00e0 15 jours.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Quelle est la dur\u00e9e de la ros\u00e9ole infantile ? \",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"La dur\u00e9e totale de la maladie est d\u2019environ 5 \u00e0 9 jours.  La phase f\u00e9brile dure 3 \u00e0 5 jours, la phase \u00e9ruptive de 2 \u00e0 4 jours.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"La ros\u00e9ole infantile existe-t-elle chez l\u2019adulte ? \",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Elle est extr\u00eamement rare, car plus de 90 % des adultes ont d\u00e9j\u00e0 \u00e9t\u00e9 infect\u00e9s dans l\u2019enfance et poss\u00e8dent une immunit\u00e9. Chez l\u2019adulte, la maladie peut survenir lors d\u2019une infection primaire (si absence d\u2019ant\u00e9c\u00e9dent) ou en cas d\u2019immunod\u00e9ficience marqu\u00e9e. Les adultes sont plus souvent infect\u00e9s par le sous-type HHV-6A.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Peut-on contracter la ros\u00e9ole une seconde fois ? \",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Apr\u00e8s la maladie, une immunit\u00e9 \u00e0 vie se d\u00e9veloppe. Les r\u00e9infections sont exceptionnelles et g\u00e9n\u00e9ralement associ\u00e9es \u00e0 des alt\u00e9rations du syst\u00e8me immunitaire.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Quelles sont les recommandations cliniques pour le traitement de la ros\u00e9ole ? \",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Selon les recommandations cliniques, aucun traitement antiviral sp\u00e9cifique n\u2019est requis. Le traitement est symptomatique : administration d\u2019antipyr\u00e9tiques (parac\u00e9tamol, ibuprof\u00e8ne) en cas de malaise important de l\u2019enfant et hydratation abondante pour pr\u00e9venir la d\u00e9shydratation. Les antibiotiques ne sont pas indiqu\u00e9s, la maladie \u00e9tant d\u2019origine virale.\"\n            }\n        }\n    ]\n}<\/script><\/div>\n<div class=\"sources-list-block sources-list-hidden\" id=\"references\">\n<div class=\"sources-list-content\">\n<div class=\"sources-list-title\">\n<p class=\"small-text-bold text-black sources-list-title-text\">R\u00e9f\u00e9rences<\/p>\n<div class=\"sources-expand-button-wrapper-mobile\">\n<div class=\"sources-expand-button\"><svg width=\"32\" height=\"32\" viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M8 12L16 20L24 12\" stroke=\"#8C9AAB\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><\/svg><\/div>\n<\/div>\n<\/div>\n<div class=\"sources-list-items\">\n<div class=\"source-item\">\n<p class=\"main-text-semibold text-black\">1.<\/p>\n<div class=\"source-item-content\">\n<p class=\"main-text-semibold text-black\"><cite>VOKA 3D Anatomie et Pathologie \u2013 Atlas 3D complet d\u2019anatomie et de pathologie [Internet]. VOKA 3D Anatomie et Pathologie. <\/cite><\/p>\n<p><span class=\"small-text-medium text-grey\">Disponible \u00e0 l\u2019adresse\u00a0: https:\/\/catalog.voka.io\/<\/span><\/div>\n<\/div>\n<div class=\"source-item\">\n<p class=\"main-text-semibold text-black\">2.<\/p>\n<div class=\"source-item-content\">\n<p class=\"main-text-semibold text-black\"><cite>Asano Y. Human herpesviruses 6 and 7.[Virus herp\u00e8s humains 6 et 7]. Rinsho Byori. 1996 Sep;44(9):825-31. Japanese. PMID\u00a0: 8911066.<\/cite><\/p>\n<\/div>\n<\/div>\n<div class=\"source-item\">\n<p class=\"main-text-semibold text-black\">3.<\/p>\n<div class=\"source-item-content\">\n<p class=\"main-text-semibold text-black\"><cite>Leung AK, Lam JM, Barankin B, Leong KF, Hon KL. Roseola Infantum: An Updated Review.[Ros\u00e9ole infantile : revue actualis\u00e9e]. Curr Pediatr Rev. 2024;20(2):119-128. doi\u00a0: 10.2174\/1573396319666221118123844. PMID\u00a0: 36411550.<\/cite><\/p>\n<\/div>\n<\/div>\n<div class=\"source-item\">\n<p class=\"main-text-semibold text-black\">4.<\/p>\n<div class=\"source-item-content\">\n<p class=\"main-text-semibold text-black\"><cite>King O, Syed HA, Al Khalili Y. Human Herpesvirus 6.[Virus herp\u00e8s humain 6]. [Updated 2025 May 5]. Dans\u00a0: StatPearls [Internet]. Treasure Island (FL)\u00a0: StatPearls Publishing\u00a0; 2025 Jan-. <\/cite><\/p>\n<p><span class=\"small-text-medium text-grey\">Disponible \u00e0 l\u2019adresse\u00a0: https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK540998\/ <\/span><\/div>\n<\/div>\n<div class=\"source-item\">\n<p class=\"main-text-semibold text-black\">5.<\/p>\n<div class=\"source-item-content\">\n<p class=\"main-text-semibold text-black\"><cite>Annabelle de St. Maurice, MD, MPH, and Brenda L. Tesini, MD. Roseola Infantum. [Ros\u00e9ole infantile].MSD Manual Professional Version [Internet]. Merck & Co., Inc.; Reviewed\/Revised May 2023.<\/cite><\/p>\n<p><span class=\"small-text-medium text-grey\">Disponible \u00e0 l\u2019adresse\u00a0: https:\/\/www.msdmanuals.com\/professional\/pediatrics\/common-viral-infections-in-infants-and-children\/roseola-infantum#Symptoms-and-Signs_v12812318<\/span><\/div>\n<\/div>\n<div class=\"source-item\">\n<p class=\"main-text-semibold text-black\">6.<\/p>\n<div class=\"source-item-content\">\n<p class=\"main-text-semibold text-black\"><cite>Medscape Reference. Human Herpesvirus 6 (HHV-6) Infection: Overview.[Infection \u00e0 virus herp\u00e8s humain 6 (HHV-6) : Aper\u00e7u]. Medscape. [Updated 2024 September 26]. <\/cite><\/p>\n<p><span class=\"small-text-medium text-grey\">Disponible \u00e0 l\u2019adresse\u00a0: https:\/\/emedicine.medscape.com\/article\/219019-overview<\/span><\/div>\n<\/div>\n<div class=\"source-item\">\n<p class=\"main-text-semibold text-black\">7.<\/p>\n<div class=\"source-item-content\">\n<p class=\"main-text-semibold text-black\"><cite>Mori Y, Yamanishi K. HHV-6A, 6B, and 7: pathogenesis, host response, and clinical disease.[HHV-6A, 6B et 7 : pathogen\u00e8se, r\u00e9ponse de l\u2019h\u00f4te et maladie clinique]. In: Arvin A, Campadelli-Fiume G, Mocarski E, et al., editors. Human Herpesviruses: Biology, Therapy, and Immunoprophylaxis. [Virus herp\u00e8s humains : Biologie, Th\u00e9rapie et Immunoprophylaxie].Cambridge: Cambridge University Press; 2007. Chapter 46. <\/cite><\/p>\n<p><span class=\"small-text-medium text-grey\">Disponible \u00e0 l\u2019adresse\u00a0: https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK47394\/<\/span><\/div>\n<\/div>\n<div class=\"source-item\">\n<p class=\"main-text-semibold text-black\">8.<\/p>\n<div class=\"source-item-content\">\n<p class=\"main-text-semibold text-black\"><cite>Razzaque, A., Yamanishi, K., Carrigan, D.R. (1994). Pathogenicity of Human Herpesvirus-6.[Pathog\u00e9nicit\u00e9 du virus herp\u00e8s humain 6]. In: Becker, Y., Darai, G. (eds) Pathogenicity of Human Herpesviruses due to Specific Pathogenicity Genes.[Pathog\u00e9nicit\u00e9 des virus herp\u00e8s humains li\u00e9e \u00e0 des g\u00e8nes de pathog\u00e9nicit\u00e9 sp\u00e9cifiques].  Frontiers of Virology, vol 3. Springer, Berlin, Heidelberg. https:\/\/doi.org\/10.1007\/978-3-642-85004-2_20. <\/cite><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sources-expand-button-wrapper\">\n<div class=\"sources-expand-button\"><svg width=\"32\" height=\"32\" viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M8 12L16 20L24 12\" stroke=\"#8C9AAB\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><\/svg><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>La ros\u00e9ole infantile constitue l\u2019une des infections les plus fr\u00e9quentes de l\u2019enfance et est observ\u00e9e dans le monde entier. Dans la litt\u00e9rature m\u00e9dicale, la ros\u00e9ole est d\u00e9sign\u00e9e sous les termes suivants : exanth\u00e8me subit, fi\u00e8vre de trois jours, pseudorub\u00e9ole, ou encore sixi\u00e8me maladie. Cliniquement, la ros\u00e9ole infantile se caract\u00e9rise par une \u00e9l\u00e9vation de la temp\u00e9rature [&hellip;]<\/p>\n","protected":false},"author":25,"featured_media":0,"template":"","diseases_category":[410],"class_list":["post-2833","diseases_post","type-diseases_post","status-publish","hentry","diseases_category-pediatrie"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v26.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ros\u00e9ole infantile (exanth\u00e8me subit) : sympt\u00f4mes, causes, diagnostic et traitement<\/title>\n<meta name=\"description\" content=\"Ros\u00e9ole infantile, ou exanth\u00e8me subit : infection caus\u00e9e par un herp\u00e8svirus. 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