{"id":2829,"date":"2026-01-29T17:21:29","date_gmt":"2026-01-29T14:21:29","guid":{"rendered":"https:\/\/wiki.dev.voka.io\/diseases\/uncategorized\/roseola-infantil\/"},"modified":"2026-01-30T12:55:27","modified_gmt":"2026-01-30T09:55:27","slug":"roseola-infantil","status":"publish","type":"diseases_post","link":"https:\/\/wiki.dev.voka.io\/pt\/doencas\/pediatria\/roseola-infantil\/","title":{"rendered":"Ros\u00e9ola infantil ou exantema s\u00fabito: etiologia, fisiopatologia, caracter\u00edsticas cl\u00ednicas, diagn\u00f3stico, tratamento, preven\u00e7\u00e3o"},"content":{"rendered":"<p><?xml encoding=\"UTF-8\" ?><\/p>\n<p>A ros\u00e9ola infantil \u00e9 uma das doen\u00e7as infecciosas mais comuns na inf\u00e2ncia e ocorre em todo o mundo. <\/p>\n<p>Nas publica\u00e7\u00f5es m\u00e9dicas, a ros\u00e9ola pode ser descrita com os seguintes nomes: exantema s\u00fabito, febre de tr\u00eas dias, pseudorrubeola e tamb\u00e9m sexta doen\u00e7a. <\/p>\n<p>Clinicamente, a ros\u00e9ola infantil manifesta-se com um aumento da temperatura corporal durante 3 dias na aus\u00eancia de outros sintomas, seguido do aparecimento de uma erup\u00e7\u00e3o cut\u00e2nea no corpo sob a forma de pequenas manchas. A maioria das crian\u00e7as s\u00e3o infectadas e superam a ros\u00e9ola at\u00e9 aos 3 anos de idade sem quaisquer complica\u00e7\u00f5es. \u00c9 dif\u00edcil diagnosticar a ros\u00e9ola infantil antes do aparecimento da erup\u00e7\u00e3o cut\u00e2nea t\u00edpica, mas conhecer as caracter\u00edsticas epidemiol\u00f3gicas e o curso da infec\u00e7\u00e3o pode facilitar significativamente o diagn\u00f3stico correto.<\/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\u00e9ola infantil\"><figcaption class=\"wp-element-caption\">Ros\u00e9ola infantil<\/figcaption><\/figure>\n<h2 class=\"wp-block-heading\" id=\"etiologia-e-epidemiologia\">Etiologia e epidemiologia<\/h2>\n<p>Na maioria dos casos, o agente causador da febre de tr\u00eas dias \u00e9 Herpesvirus Humano 6 (HHV-6) e, em alguns casos, Herpesvirus Humano 7 (HHV-7). <\/p>\n<p>Mais de 90% da popula\u00e7\u00e3o adulta global est\u00e1 infectada com o HHV-6, sendo que alguns destes indiv\u00edduos eliminam o v\u00edrus na saliva, contribuindo para a sua dissemina\u00e7\u00e3o. A maior incid\u00eancia \u00e9 registrada na faixa et\u00e1ria de 3 a 9 meses de vida. <\/p>\n<p>O Herpesvirus Humano 6 (HHV-6) divide-se em dois subtipos: HHV-6A e HHV-6B, que apresentam diferen\u00e7as nas suas propriedades biol\u00f3gicas, imunol\u00f3gicas, epidemiol\u00f3gicas e moleculares. O HHV-6B \u00e9 considerado o agente causador do exantema s\u00fabito, enquanto a infec\u00e7\u00e3o por HHV-6A \u00e9 mais comum em adultos ou indiv\u00edduos imunocomprometidos. Os agentes patog\u00e9nicos pertencem \u00e0 fam\u00edlia dos herpesv\u00edrus e partilham as mesmas caracter\u00edsticas que outros v\u00edrus da fam\u00edlia do herpes. <\/p>\n<p>Normalmente, a infec\u00e7\u00e3o prim\u00e1ria ocorre durante o contato da crian\u00e7a com pessoas com infec\u00e7\u00e3o latente. O v\u00edrus \u00e9 secretado de saliva e transmitido por got\u00edculas e contacto ao espirrar, tossir, rir e beijar. <\/p>\n<p>O per\u00edodo de incuba\u00e7\u00e3o varia, em m\u00e9dia, de 5 a 15 dias.<\/p>\n<h2 class=\"wp-block-heading\" id=\"fisiopatologia\">Fisiopatologia<\/h2>\n<p>Durante a primo-infec\u00e7\u00e3o, o v\u00edrus do herpes humano tipo 6 replica-se com maior frequ\u00eancia nos linf\u00f3citos e nas c\u00e9lulas das gl\u00e2ndulas salivares. O v\u00edrus ataca linf\u00f3citos T CD4+ maduros e provoca um efeito imunomodulador ao aumentar a atividade das c\u00e9lulas natural killer (c\u00e9lulas NK). <\/p>\n<p>Em resposta, o organismo aumenta a s\u00edntese de interleucina-15 (IL-15) por outras c\u00e9lulas, o que neutraliza o efeito do v\u00edrus no sistema imunol\u00f3gico. Ap\u00f3s penetrar numa c\u00e9lula, o v\u00edrus replica-se e o seu ADN persiste durante muito tempo em c\u00e9lulas mononucleares do sangue perif\u00e9rico, o que pode levar a uma infec\u00e7\u00e3o latente para toda a vida.<\/p>\n<h2 class=\"wp-block-heading\" id=\"manifestacoes-clinicas\">Manifesta\u00e7\u00f5es cl\u00ednicas<\/h2>\n<p>O quadro cl\u00ednico t\u00edpico da roseola infantil inclui:<\/p>\n<ul class=\"wp-block-list\">\n<li><strong>Febre at\u00e9 40 \u00b0C<\/strong> ou mais durante 3 a 5 dias, que pode ser dif\u00edcil de controlar com medicamentos antit\u00e9rmicos. Ao mesmo tempo, a crian\u00e7a pode estar bastante ativa e ter bom apetite;<\/li>\n<li><strong>Erup\u00e7\u00e3o macular com pintinhas vermelhas<\/strong>, que surge 3 a 5 dias ap\u00f3s o in\u00edcio da febre. Na maioria das vezes, a exantema representa manchas ou n\u00f3dulos rosados \u200b\u200be arredondados de 2-3 mm de di\u00e2metro, que desaparecem quando pressionados. As manchas aparecem primeiro pelo corpo e depois se espalham para o pesco\u00e7o e membros. A erup\u00e7\u00e3o desaparece espontaneamente ap\u00f3s 2 a 4 dias.<\/li>\n<\/ul>\n<div class=\"carousel-block\">\n<div class=\"swiper carousel-swiper carousel-swiper-block_69f1c9afa8d4e\">\n<div class=\"swiper-wrapper\">\n<div class=\"swiper-slide image-carousel-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=\"Erup\u00e7\u00e3o da ros\u00e9ola nas costas de uma crian\u00e7a\"><span class=\"small-text-article text-main-text-color\">Erup\u00e7\u00e3o da ros\u00e9ola nas costas de uma crian\u00e7a<\/span><\/div>\n<div class=\"swiper-slide image-carousel-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=\"Erup\u00e7\u00e3o da ros\u00e9ola na barriga de uma crian\u00e7a\"><span class=\"small-text-article text-main-text-color\">Erup\u00e7\u00e3o da ros\u00e9ola na barriga de uma crian\u00e7a<\/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_69f1c9afa8d4e\"><\/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_69f1c9afa8d4e\"><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_69f1c9afa8d4e\" 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_69f1c9afa8d4e', {\n            slidesPerView: 1,\n            spaceBetween: 20,\n            loop: true,\n            pagination: {\n                el: '.swiper-article-carousel__pagination-container-block_69f1c9afa8d4e',\n                clickable: true,\n            },\n            navigation: {\n                nextEl: '.carousel-swiper-button-next-block_69f1c9afa8d4e',\n                prevEl: '.carousel-swiper-button-prev-block_69f1c9afa8d4e',\n            },\n        })\n    })\n<\/script><\/p>\n<p><strong>Menos comuns<\/strong> na ros\u00e9ola infantil s\u00e3o:<\/p>\n<ul class=\"wp-block-list\">\n<li>Inflama\u00e7\u00e3o das vias respirat\u00f3rias superiores: faringite, faringotonsilite, traque\u00edte, etc. Em alguns casos, podem ser observadas manchas de Nagayama: manchas vermelhas no palato mole.<\/li>\n<li>Inflama\u00e7\u00e3o do ouvido m\u00e9dio: otite.<\/li>\n<li>Linfadenopatia: aumento dos linfonodos perif\u00e9ricos. <\/li>\n<\/ul>\n<p><strong>Complica\u00e7\u00f5es<\/strong>:<\/p>\n<ul class=\"wp-block-list\">\n<li>Convuls\u00f5es febris.<\/li>\n<li>Trombocitopenia: diminui\u00e7\u00e3o do n\u00famero de plaquetas no sangue perif\u00e9rico.<\/li>\n<li>S\u00edndrome de Guillain-Barr\u00e9: polineurite que se desenvolve 1 a 4 semanas ap\u00f3s a infec\u00e7\u00e3o.<\/li>\n<li>Hepatite.<\/li>\n<li>Encefalite, meningoencefalite.<\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\" id=\"diagnostico-da-roseola-infantil\">Diagn\u00f3stico da ros\u00e9ola infantil<\/h2>\n<p>Normalmente, o diagn\u00f3stico da ros\u00e9ola infantil \u00e9 feito clinicamente pelo m\u00e9dico e n\u00e3o requer exames laboratoriais. <\/p>\n<p>Caso seja necess\u00e1ria a confirma\u00e7\u00e3o do agente patog\u00e9nico, o m\u00e9todo de rea\u00e7\u00e3o em cadeia da polimerase (PCR) \u00e9 amplamente utilizado para detectar o ADN do agente causador no sangue, na saliva ou em raspagens. Menos utilizado \u00e9 o exame de sangue para detectar anticorpos (IgM, IgG) contra o v\u00edrus.<\/p>\n<h3 class=\"wp-block-heading\" id=\"diagnostico-diferencial\">Diagn\u00f3stico diferencial<\/h3>\n<p>A ros\u00e9ola infantil deve ser diferenciada das seguintes doen\u00e7as e condi\u00e7\u00f5es:<\/p>\n<ul class=\"wp-block-list\">\n<li><span class=\"glossary-term\" data-title=\"Sarampo\" data-tooltip=\"O sarampo (lat. morbilli) \u00e9 uma doen\u00e7a viral aguda altamente contagiosa, caracterizada por um curso c\u00edclico, intoxica\u00e7\u00e3o, inflama\u00e7\u00e3o catarral das mucosas das vias respirat\u00f3rias e dos olhos, bem como por um exantema maculopapular caracter\u00edstico. O sarampo \u00e9 provocado por um v\u00edrus de RNA pertencente ao g\u00eanero Morbillivirus.\" data-link=\"https:\/\/wiki.dev.voka.io\/pt\/glossario\/sarampo\/\">Sarampo<\/span>;<\/li>\n<li>Rub\u00e9ola;<\/li>\n<li><span class=\"glossary-term\" data-title=\"Escarlatina\" data-tooltip=\"Escarlatina (do latim tardio &quot;scarlatum&quot; \u2014 vermelho vivo) \u00e9 uma doen\u00e7a infecciosa aguda que representa uma das formas cl\u00ednicas de infec\u00e7\u00e3o estreptoc\u00f3cica. A doen\u00e7a \u00e9 causada pela bact\u00e9ria chamada estreptococo beta-hemol\u00edtico do grupo A, que produz a toxina eritrog\u00eanica de Dick (escarlatina).\" data-link=\"https:\/\/wiki.dev.voka.io\/pt\/glossario\/escarlatina\/\">Escarlatina<\/span>;<\/li>\n<li>Erup\u00e7\u00e3o cut\u00e2nea medicamentosa;<\/li>\n<li>Alergia cut\u00e2nea;<\/li>\n<li>Mononucleose (infec\u00e7\u00e3o causada pelo v\u00edrus Epstein-Barr);<\/li>\n<li>Infec\u00e7\u00e3o por citomegalov\u00edrus;<\/li>\n<li>Infec\u00e7\u00e3o por parvov\u00edrus B19.<\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\" id=\"tratamento-da-roseola-infantil\">Tratamento da ros\u00e9ola infantil<\/h2>\n<p>Na grande maioria dos casos, o organismo combate a infec\u00e7\u00e3o naturalmente, sem necessidade de tratamento espec\u00edfico.<br \/>Ao diagnosticar a ros\u00e9ola infantil, o m\u00e9dico deve explicar ao respons\u00e1vel em que situa\u00e7\u00f5es ele deve procurar ajuda m\u00e9dica novamente e como cuidar adequadamente da crian\u00e7a.<\/p>\n<p>Condi\u00e7\u00f5es <strong>que exigem assist\u00eancia m\u00e9dica imediata<\/strong>:<\/p>\n<ul class=\"wp-block-list\">\n<li>Confus\u00e3o mental, sonol\u00eancia anormal;<\/li>\n<li>Aumento da temperatura corporal que n\u00e3o diminui com antipir\u00e9ticos;<\/li>\n<li>Convuls\u00f5es;<\/li>\n<li>Erup\u00e7\u00e3o cut\u00e2nea com sangue, erup\u00e7\u00e3o que n\u00e3o desaparece ao pressionar;<\/li>\n<li>V\u00f4mito que n\u00e3o traz al\u00edvio;<\/li>\n<li>Colora\u00e7\u00e3o amarelada da escler\u00f3tica e da pele;<\/li>\n<li>Altera\u00e7\u00e3o da cor da urina;<\/li>\n<li><span class=\"glossary-term\" data-title=\"Edema\" data-tooltip=\"O edema \u00e9 uma acumula\u00e7\u00e3o excessiva de l\u00edquido nos espa\u00e7os intercelulares (intersticiais) dos tecidos ou nas cavidades serosas do corpo. Clinicamente, manifesta-se por incha\u00e7o, aumento do volume de um \u00f3rg\u00e3o ou de uma parte do corpo. \" data-link=\"https:\/\/wiki.dev.voka.io\/pt\/glossario\/edema\/\">Edema<\/span>.<\/li>\n<\/ul>\n<p><strong>O tratamento sintom\u00e1tico<\/strong> baseia-se em:<\/p>\n<ul class=\"wp-block-list\">\n<li>Redu\u00e7\u00e3o da temperatura corporal elevada;<\/li>\n<li>Higiene nasal; <\/li>\n<li>Hidrata\u00e7\u00e3o adequada, oferecendo bastante l\u00edquido.<\/li>\n<\/ul>\n<div class=\"social-banner-block\">\n<div class=\"social-banner-content\">\n<p class=\"h5-title text-black\">Encontra mais conte\u00fados cientificamente exactos nas nossas redes sociais<\/p>\n<p><span class=\"social-banner-text text-grey\">Subscreve e n\u00e3o percas os recursos mais recentes<\/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=\"prevencao-do-exantema-subito-em-criancas\">Preven\u00e7\u00e3o do exantema s\u00fabito em crian\u00e7as<\/h2>\n<p>N\u00e3o existe profilaxia espec\u00edfica (vacina\u00e7\u00e3o) contra o HHV-6 ou o HHV-7.<\/p>\n<p>Os m\u00e9todos<strong> n\u00e3o espec\u00edficos de preven\u00e7\u00e3o<\/strong> incluem:<\/p>\n<ul class=\"wp-block-list\">\n<li>Evitar contactos com pessoas infectadas com ros\u00e9ola em fase ativa;<\/li>\n<li>Respeitar os h\u00e1bitos de higiene pessoal.<\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\" id=\"imunidade\">Imunidade<\/h2>\n<p>Ap\u00f3s a ros\u00e9ola infantil, a crian\u00e7a desenvolve imunidade sorol\u00f3gica vital\u00edcia. Casos de reinfec\u00e7\u00e3o s\u00e3o excecionais, principalmente em pessoas imunodeprimidas.<\/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\">1. O que \u00e9 a ros\u00e9ola infantil e quais s\u00e3o as causas? <\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">A ros\u00e9ola infantil (exantema s\u00fabito) \u00e9 uma infec\u00e7\u00e3o viral aguda que afeta principalmente beb\u00e9s entre os 6 meses e os 3 anos. A causa da doen\u00e7a \u00e9 a primo-infec\u00e7\u00e3o pelo v\u00edrus herpes tipo 6 (HHV-6B), menos frequentemente pelo tipo 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\">2. Quais s\u00e3o os sintomas da ros\u00e9ola infantil? <\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">A doen\u00e7a progride em duas fases. A primeira \u00e9 caracterizada por um aumento s\u00fabito da temperatura que pode atingir 39\u201340 \u00b0C, que se mant\u00e9m durante tr\u00eas a cinco dias. No entanto, os sintomas catarrais (tosse, coriza) est\u00e3o normalmente ausentes e a crian\u00e7a continua ativa. A segunda fase come\u00e7a quando a febre desaparece subitamente: uma erup\u00e7\u00e3o macular rosada surge na pele, que se espalha do tronco para as extremidades e desaparece sem deixar vest\u00edgios ap\u00f3s alguns dias.<\/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\">3. Como a infec\u00e7\u00e3o \u00e9 transmitida e qual \u00e9 o seu per\u00edodo de incuba\u00e7\u00e3o? <\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">O v\u00edrus \u00e9 transmiss\u00edvel atrav\u00e9s de got\u00edculas respirat\u00f3rias e por contacto (atrav\u00e9s da saliva ao beijar, espirrar, usar utens\u00edlios comuns). Na maioria dos casos, a transmiss\u00e3o do v\u00edrus \u00e9 provocada por adultos portadores. O per\u00edodo de incuba\u00e7\u00e3o (tempo entre a infec\u00e7\u00e3o e o aparecimento dos primeiros sintomas) \u00e9, em m\u00e9dia, de 5 a 15 dias.<\/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\">4. Quanto tempo demora a ros\u00e9ola a passar? <\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">A dura\u00e7\u00e3o total da doen\u00e7a \u00e9 de cerca de 5 a 9 dias. A fase febril dura 3 a 5 dias. As mancham no corpo duram 2 a 4 dias.<\/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\">5. Os adultos podem ter exantema s\u00fabito? <\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">Isto \u00e9 extremamente raro, pois mais de 90% dos adultos j\u00e1 tiveram esta infec\u00e7\u00e3o na inf\u00e2ncia e s\u00e3o imunes. Os adultos podem desenvolver a doen\u00e7a durante a primo-infec\u00e7\u00e3o (se a pessoa n\u00e3o teve a doen\u00e7a antes) ou em casos de imunodefici\u00eancia grave. Os adultos s\u00e3o infectados com maior frequ\u00eancia pelo subtipo 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\">6. Pode-se ter ros\u00e9ola mais do que uma vez? <\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">Ap\u00f3s a infec\u00e7\u00e3o, desenvolve-se uma imunidade permanente para toda a vida. As infec\u00e7\u00f5es recorrentes (reinfec\u00e7\u00f5es) s\u00e3o extremamente raras e est\u00e3o geralmente associadas \u00e0 disfun\u00e7\u00e3o do sistema imunit\u00e1rio.<\/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\">7. Quais s\u00e3o as indica\u00e7\u00f5es cl\u00ednicas para o tratamento da roseola? <\/p>\n<\/div>\n<div class=\"faq-answer text-main-text-color main-text-medium\">De acordo com as guidelines cl\u00ednicas, n\u00e3o \u00e9 necess\u00e1rio tratamento antiviral espec\u00edfico. O tratamento \u00e9 sintom\u00e1tico: antipir\u00e9ticos (paracetamol, ibuprofeno) se a crian\u00e7a se sentir mal e hidrata\u00e7\u00e3o adequada para evitar a desidrata\u00e7\u00e3o. Os antibi\u00f3ticos n\u00e3o s\u00e3o utilizados, uma vez que a doen\u00e7a \u00e9 de natureza viral.<\/div>\n<\/div>\n<div class=\"expand-button-wrapper\"><button class=\"text-accent expand-button\">+<\/button><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sources-list-block sources-list-hidden\" id=\"referencias\">\n<div class=\"sources-list-content\">\n<div class=\"sources-list-title\">\n<p class=\"small-text-bold text-black sources-list-title-text\">Refer\u00eancias<\/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 Anatomy & Pathology \u2013 Complete Anatomy and Pathology 3D Atlas (Atlas 3D completo de anatomia e patologia) [Internet]. VOKA 3D Anatomy & Pathology. <\/cite><\/p>\n<p><span class=\"small-text-medium text-grey\">Dispon\u00edvel em: 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]. Rinsho Byori. 1996 Sep;44(9):825-31. Japanese. PMID: 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. Curr Pediatr Rev. 2024;20(2):119-128. doi: 10.2174\/1573396319666221118123844. PMID: 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. [Updated 2025 May 5]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. <\/cite><\/p>\n<p><span class=\"small-text-medium text-grey\">Dispon\u00edvel em: 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. MSD Manual Professional Version [Internet]. Merck & Co., Inc.; Reviewed\/Revised May 2023.<\/cite><\/p>\n<p><span class=\"small-text-medium text-grey\">Dispon\u00edvel em: 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. Medscape. [Updated 2024 September 26]. <\/cite><\/p>\n<p><span class=\"small-text-medium text-grey\">Dispon\u00edvel em: 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. In: Arvin A, Campadelli-Fiume G, Mocarski E, et al., editors. Human Herpesviruses: Biology, Therapy, and Immunoprophylaxis. Cambridge: Cambridge University Press; 2007. Chapter 46. <\/cite><\/p>\n<p><span class=\"small-text-medium text-grey\">Dispon\u00edvel em: 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. In: Becker, Y., Darai, G. (eds) Pathogenicity of Human Herpesviruses due to Specific Pathogenicity Genes. 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>A ros\u00e9ola infantil \u00e9 uma das doen\u00e7as infecciosas mais comuns na inf\u00e2ncia e ocorre em todo o mundo. Nas publica\u00e7\u00f5es m\u00e9dicas, a ros\u00e9ola pode ser descrita com os seguintes nomes: exantema s\u00fabito, febre de tr\u00eas dias, pseudorrubeola e tamb\u00e9m sexta doen\u00e7a. Clinicamente, a ros\u00e9ola infantil manifesta-se com um aumento da temperatura corporal durante 3 dias [&hellip;]<\/p>\n","protected":false},"author":25,"featured_media":0,"template":"","diseases_category":[412],"class_list":["post-2829","diseases_post","type-diseases_post","status-publish","hentry","diseases_category-pediatria"],"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\u00e9ola infantil (exantema s\u00fabito): sintomas, causas, diagn\u00f3stico e tratamento<\/title>\n<meta name=\"description\" content=\"Ros\u00e9ola infantil, ou exantema s\u00fabito: infec\u00e7\u00e3o causada pelo v\u00edrus do herpes. 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