{"id":58865,"date":"2026-03-20T15:17:43","date_gmt":"2026-03-20T15:17:43","guid":{"rendered":"https:\/\/www.mediconanet.pt\/?p=58865"},"modified":"2026-03-24T16:25:41","modified_gmt":"2026-03-24T16:25:41","slug":"alergias-tipos-sintomas-diagnostico","status":"publish","type":"post","link":"https:\/\/www.mediconanet.pt\/en\/alergias-tipos-sintomas-diagnostico\/","title":{"rendered":"Alergias: Tipos, Sintomas e Diagn\u00f3stico"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"58865\" class=\"elementor elementor-58865\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-570cfe3 e-flex e-con-boxed e-con e-parent\" data-id=\"570cfe3\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1761780 elementor-widget elementor-widget-text-editor\" data-id=\"1761780\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2><b>Introdu\u00e7\u00e3o<\/b><\/h2><p><span style=\"font-weight: 400;\">As <\/span><b>alergias<\/b><span style=\"font-weight: 400;\"> s\u00e3o uma das condi\u00e7\u00f5es cr\u00f3nicas mais prevalentes a n\u00edvel mundial, afetando mais de 150 milh\u00f5es de europeus e cerca de 30 % da popula\u00e7\u00e3o portuguesa, segundo dados da Sociedade Portuguesa de Alergologia e Imunologia Cl\u00ednica (SPAIC). A preval\u00eancia das doen\u00e7as al\u00e9rgicas tem aumentado consistentemente nas \u00faltimas d\u00e9cadas, particularmente nos pa\u00edses industrializados.<\/span><\/p><p><span style=\"font-weight: 400;\">Uma <\/span><b>alergia <\/b><span style=\"font-weight: 400;\">\u00e9 uma resposta exagerada do sistema imunit\u00e1rio a subst\u00e2ncias habitualmente inofensivas \u2014 os alerg\u00e9nios. Esta rea\u00e7\u00e3o imunit\u00e1ria inadequada pode manifestar-se de m\u00faltiplas formas, desde rinite e conjuntivite al\u00e9rgica at\u00e9 asma, urtic\u00e1ria, eczema e anafilaxia. A Organiza\u00e7\u00e3o Mundial de Sa\u00fade (OMS) classifica as doen\u00e7as al\u00e9rgicas entre as epidemias n\u00e3o infeciosas do s\u00e9culo XXI, reconhecendo o seu impacto crescente na sa\u00fade p\u00fablica.<\/span><\/p><h2><b>Tipos de Alergias Mais Comuns<\/b><\/h2><p><span style=\"font-weight: 400;\">A <\/span><b>rinite al\u00e9rgica<\/b><span style=\"font-weight: 400;\"> \u00e9 a manifesta\u00e7\u00e3o al\u00e9rgica mais frequente, afetando 20 a 25 % da popula\u00e7\u00e3o portuguesa. Caracteriza-se por espirros repetidos, congest\u00e3o nasal, rinorreia aquosa e prurido nasal, podendo ser sazonal (associada a p\u00f3lenes) ou perene (\u00e1caros, pelos de animais, fungos). A European Academy of Allergy and Clinical Immunology (EAACI) classifica a rinite al\u00e9rgica como intermitente ou persistente, conforme a dura\u00e7\u00e3o dos sintomas.<\/span><\/p><p><span style=\"font-weight: 400;\">A <\/span><b>asma al\u00e9rgica<\/b><span style=\"font-weight: 400;\"> afeta cerca de 7 % da popula\u00e7\u00e3o portuguesa e \u00e9 frequentemente coexistente com a rinite al\u00e9rgica \u2014 o conceito de &#8220;via a\u00e9rea \u00fanica&#8221; reconhece que estas duas condi\u00e7\u00f5es partilham mecanismos inflamat\u00f3rios comuns. A Global Initiative for Asthma (GINA) recomenda a avalia\u00e7\u00e3o de rinite em todos os doentes asm\u00e1ticos e vice-versa.<\/span><\/p><p><span style=\"font-weight: 400;\">As <\/span><b>alergias alimentares<\/b><span style=\"font-weight: 400;\"> afetam 3 a 6 % das crian\u00e7as e 1 a 3 % dos adultos. Os alerg\u00e9nios alimentares mais frequentes em Portugal incluem leite de vaca, ovo, frutos secos, marisco, peixe, trigo e soja. A alergia ao amendoim e frutos de casca rija \u00e9 a causa mais comum de anafilaxia alimentar. A dermatite at\u00f3pica (eczema) e a urtic\u00e1ria s\u00e3o outras manifesta\u00e7\u00f5es al\u00e9rgicas frequentes que afetam significativamente a qualidade de vida.<\/span><\/p><h2><b>Mecanismo das Alergias<\/b><\/h2><p><span style=\"font-weight: 400;\">As<\/span><b> alergias mediadas por IgE<\/b><span style=\"font-weight: 400;\"> (tipo I) s\u00e3o as mais comuns. Na primeira exposi\u00e7\u00e3o ao alerg\u00e9nio, o sistema imunit\u00e1rio produz anticorpos IgE espec\u00edficos que se fixam nos mast\u00f3citos e bas\u00f3filos. Na reexposi\u00e7\u00e3o, o alerg\u00e9nio liga-se \u00e0s IgE, provocando a desgranula\u00e7\u00e3o destas c\u00e9lulas e a liberta\u00e7\u00e3o de histamina, leucotrienos e outras subst\u00e2ncias inflamat\u00f3rias.<\/span><\/p><p><span style=\"font-weight: 400;\">A histamina \u00e9 a principal mediadora dos sintomas al\u00e9rgicos agudos: vasodilata\u00e7\u00e3o, aumento da permeabilidade vascular, contra\u00e7\u00e3o do m\u00fasculo liso br\u00f4nquico, estimula\u00e7\u00e3o das termina\u00e7\u00f5es nervosas (prurido) e secre\u00e7\u00e3o mucosa. A fase tardia da resposta al\u00e9rgica, mediada por eosin\u00f3filos e linf\u00f3citos T, contribui para a inflama\u00e7\u00e3o cr\u00f3nica observada na asma e rinite persistente.<\/span><\/p><p><span style=\"font-weight: 400;\">A predisposi\u00e7\u00e3o gen\u00e9tica (atopia) desempenha papel fundamental: se ambos os pais forem al\u00e9rgicos, o risco nos filhos \u00e9 de 60 a 80 %. A European Academy of Allergy and Clinical Immunology (EAACI) reconhece que fatores ambientais \u2014 polui\u00e7\u00e3o, altera\u00e7\u00f5es na dieta, uso precoce de antibi\u00f3ticos, redu\u00e7\u00e3o da exposi\u00e7\u00e3o microbiana (hip\u00f3tese da higiene) \u2014 contribuem para o aumento da preval\u00eancia das alergias.<\/span><\/p><h2><b>Diagn\u00f3stico das Alergias<\/b><\/h2><p>O <b>diagn\u00f3stico das alergias <\/b>baseia-se na hist\u00f3ria cl\u00ednica detalhada, nos testes cut\u00e2neos por picada (prick tests) e na doseamento de IgE espec\u00edficas s\u00e9ricas. Os testes cut\u00e2neos por picada s\u00e3o o m\u00e9todo de primeira linha, com resultados dispon\u00edveis em 15 a 20 minutos. A SPAIC recomenda a realiza\u00e7\u00e3o de testes cut\u00e2neos com os pain\u00e9is de alerg\u00e9nios mais relevantes para a regi\u00e3o geogr\u00e1fica do doente.<\/p><p><span style=\"font-weight: 400;\">A doseamento de IgE espec\u00edficas s\u00e9ricas (ImmunoCAP) \u00e9 uma alternativa quando os testes cut\u00e2neos n\u00e3o podem ser realizados (dermatite extensa, uso de anti-histam\u00ednicos, risco de anafilaxia). O diagn\u00f3stico molecular de alergias (component-resolved diagnostics) permite identificar as prote\u00ednas alerg\u00e9nicas espec\u00edficas envolvidas, melhorando a precis\u00e3o diagn\u00f3stica e a indica\u00e7\u00e3o para imunoterapia.<\/span><\/p><p><span style=\"font-weight: 400;\">Os testes de provoca\u00e7\u00e3o (nasal, br\u00f4nquica, oral) s\u00e3o considerados o gold standard diagn\u00f3stico mas s\u00e3o reservados para situa\u00e7\u00f5es espec\u00edficas, dado o risco de rea\u00e7\u00f5es graves. A Dire\u00e7\u00e3o-Geral da Sa\u00fade (DGS) de Portugal estabelece orienta\u00e7\u00f5es para referencia\u00e7\u00e3o a consulta de alergologia, garantindo o diagn\u00f3stico adequado e o acesso a imunoterapia espec\u00edfica quando indicada.<\/span><\/p><p><i><span style=\"font-weight: 400;\">Na <strong>M\u00e9dico na Net<\/strong>, a <strong>equipa cl\u00ednica<\/strong> oferece avalia\u00e7\u00e3o inicial de <a href=\"https:\/\/www.mediconanet.pt\/produto\/alergias\/\"><strong>alergias<\/strong><\/a>, orienta\u00e7\u00e3o sobre investiga\u00e7\u00e3o diagn\u00f3stica e referencia\u00e7\u00e3o para consulta de alergologia quando indicado.<\/span><\/i><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-375973d elementor-widget elementor-widget-image\" data-id=\"375973d\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.mediconanet.pt\/wp-content\/uploads\/2026\/03\/wpimage-id893sizeSlugfulllinkDestinationnone-figure-classwp-block-image-size-fullimg-srchttpscomprarcbdonline.ptwp-contentuploads202603unnamed-3.jpg-altFrasco-de-vidro-transparente-c-69.jpg\" title=\"Consulta M\u00e9dica \u00e0 Dist\u00e2ncia: Conforto e Acompanhamento Personalizado\" alt=\"Homem em casa a realizar consulta m\u00e9dica por v\u00eddeo no tablet para avalia\u00e7\u00e3o de alergias de forma pr\u00e1tica e segura\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1545e08 e-flex e-con-boxed e-con e-parent\" data-id=\"1545e08\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-9ad30cf e-con-full e-flex e-con e-child\" data-id=\"9ad30cf\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-66e4f21 e-con-full e-flex e-con e-child\" data-id=\"66e4f21\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c44ae3e elementor-widget elementor-widget-heading\" data-id=\"c44ae3e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Perguntas frequentes (FAQ)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-439b5c3 elementor-widget elementor-widget-n-accordion\" data-id=\"439b5c3\" data-element_type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;one&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-7080\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-7080\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> As alergias s\u00e3o heredit\u00e1rias? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-7080\" class=\"elementor-element elementor-element-d801294 e-con-full e-flex e-con e-child\" data-id=\"d801294\" data-element_type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-7080\" class=\"elementor-element elementor-element-67dd609 e-flex e-con-boxed e-con e-child\" data-id=\"67dd609\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2204be5 elementor-widget elementor-widget-text-editor\" data-id=\"2204be5\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">A predisposi\u00e7\u00e3o al\u00e9rgica (atopia) \u00e9 heredit\u00e1ria. Se um dos pais \u00e9 al\u00e9rgico, o risco nos filhos \u00e9 de 30-40%. Se ambos os pais s\u00e3o al\u00e9rgicos, o risco sobe para 60-80%. Contudo, a alergia espec\u00edfica (ex: p\u00f3len, \u00e1caros) n\u00e3o \u00e9 herdada diretamente.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-7081\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-7081\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> As alergias podem surgir em adulto? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-7081\" class=\"elementor-element elementor-element-f07e3ff e-con-full e-flex e-con e-child\" data-id=\"f07e3ff\" data-element_type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-7081\" class=\"elementor-element elementor-element-ba0d7df e-flex e-con-boxed e-con e-child\" data-id=\"ba0d7df\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bd0918d elementor-widget elementor-widget-text-editor\" data-id=\"bd0918d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Sim. Embora muitas <\/span><b>alergias<\/b><span style=\"font-weight: 400;\"> se manifestem na inf\u00e2ncia, \u00e9 poss\u00edvel desenvolver novas alergias em qualquer idade. As alergias alimentares, a rinite al\u00e9rgica e a asma podem surgir de novo na idade adulta.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-7082\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-7082\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Os testes de alergia s\u00e3o dolorosos? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-7082\" class=\"elementor-element elementor-element-1948aa2 e-con-full e-flex e-con e-child\" data-id=\"1948aa2\" data-element_type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-7082\" class=\"elementor-element elementor-element-44203e4 e-flex e-con-boxed e-con e-child\" data-id=\"44203e4\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-90363e4 elementor-widget elementor-widget-text-editor\" data-id=\"90363e4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">N\u00e3o. Os testes cut\u00e2neos por picada (prick tests) causam apenas um leve desconforto moment\u00e2neo e s\u00e3o seguros. S\u00e3o realizados no antebra\u00e7o e os resultados ficam dispon\u00edveis em 15-20 minutos.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-7083\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-7083\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> As alergias podem desaparecer? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-7083\" class=\"elementor-element elementor-element-e6b82d0 e-con-full e-flex e-con e-child\" data-id=\"e6b82d0\" data-element_type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-7083\" class=\"elementor-element elementor-element-ff98332 e-flex e-con-boxed e-con e-child\" data-id=\"ff98332\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b745fb3 elementor-widget elementor-widget-text-editor\" data-id=\"b745fb3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Sim, em alguns casos. A <\/span><b>alergia <\/b><span style=\"font-weight: 400;\">ao leite e ao ovo resolve-se frequentemente na inf\u00e2ncia. Contudo, as alergias a amendoim, frutos secos, peixe e marisco tendem a persistir. A rinite al\u00e9rgica pode melhorar ou agravar ao longo da vida.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-7084\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"5\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-7084\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Qual a diferen\u00e7a entre alergia e intoler\u00e2ncia? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-7084\" class=\"elementor-element elementor-element-7547615 e-con-full e-flex e-con e-child\" data-id=\"7547615\" data-element_type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-7084\" class=\"elementor-element elementor-element-8c9a957 e-flex e-con-boxed e-con e-child\" data-id=\"8c9a957\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2f07efa elementor-widget elementor-widget-text-editor\" data-id=\"2f07efa\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">A alergia envolve o sistema imunit\u00e1rio (produ\u00e7\u00e3o de IgE) e pode causar rea\u00e7\u00f5es graves, incluindo anafilaxia. A intoler\u00e2ncia (ex: intoler\u00e2ncia \u00e0 lactose) n\u00e3o envolve o sistema imunit\u00e1rio e causa sintomas digestivos, sem risco de anafilaxia.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<script type=\"application\/ld+json\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"As alergias s\\u00e3o heredit\\u00e1rias?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A predisposi\\u00e7\\u00e3o al\\u00e9rgica (atopia) \\u00e9 heredit\\u00e1ria. Se um dos pais \\u00e9 al\\u00e9rgico, o risco nos filhos \\u00e9 de 30-40%. Se ambos os pais s\\u00e3o al\\u00e9rgicos, o risco sobe para 60-80%. Contudo, a alergia espec\\u00edfica (ex: p\\u00f3len, \\u00e1caros) n\\u00e3o \\u00e9 herdada diretamente.\"}},{\"@type\":\"Question\",\"name\":\"As alergias podem surgir em adulto?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Sim. Embora muitas alergias se manifestem na inf\\u00e2ncia, \\u00e9 poss\\u00edvel desenvolver novas alergias em qualquer idade. As alergias alimentares, a rinite al\\u00e9rgica e a asma podem surgir de novo na idade adulta.\"}},{\"@type\":\"Question\",\"name\":\"Os testes de alergia s\\u00e3o dolorosos?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"N\\u00e3o. Os testes cut\\u00e2neos por picada (prick tests) causam apenas um leve desconforto moment\\u00e2neo e s\\u00e3o seguros. S\\u00e3o realizados no antebra\\u00e7o e os resultados ficam dispon\\u00edveis em 15-20 minutos.\"}},{\"@type\":\"Question\",\"name\":\"As alergias podem desaparecer?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Sim, em alguns casos. A alergia ao leite e ao ovo resolve-se frequentemente na inf\\u00e2ncia. Contudo, as alergias a amendoim, frutos secos, peixe e marisco tendem a persistir. A rinite al\\u00e9rgica pode melhorar ou agravar ao longo da vida.\"}},{\"@type\":\"Question\",\"name\":\"Qual a diferen\\u00e7a entre alergia e intoler\\u00e2ncia?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A alergia envolve o sistema imunit\\u00e1rio (produ\\u00e7\\u00e3o de IgE) e pode causar rea\\u00e7\\u00f5es graves, incluindo anafilaxia. A intoler\\u00e2ncia (ex: intoler\\u00e2ncia \\u00e0 lactose) n\\u00e3o envolve o sistema imunit\\u00e1rio e causa sintomas digestivos, sem risco de anafilaxia.\"}}]}<\/script>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-02d7fba e-flex e-con-boxed e-con e-parent\" data-id=\"02d7fba\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ca91313 elementor-widget elementor-widget-text-editor\" data-id=\"ca91313\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2><b>Conclus\u00e3o<\/b><\/h2><p><span style=\"font-weight: 400;\">As <\/span><b>alergias <\/b><span style=\"font-weight: 400;\">s\u00e3o condi\u00e7\u00f5es cr\u00f3nicas extremamente prevalentes em Portugal e na Europa, com impacto significativo na qualidade de vida. O diagn\u00f3stico correto, baseado na hist\u00f3ria cl\u00ednica e em testes espec\u00edficos, \u00e9 fundamental para orientar o tratamento adequado. A compreens\u00e3o dos mecanismos al\u00e9rgicos e a identifica\u00e7\u00e3o dos alerg\u00e9nios respons\u00e1veis s\u00e3o os primeiros passos para uma gest\u00e3o eficaz das <\/span><b>doen\u00e7as al\u00e9rgicas<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><h2><b>Refer\u00eancias<\/b><\/h2><p><a href=\"https:\/\/www.eaaci.org\/\" target=\"_blank\" rel=\"dofollow noopener\">European Academy of Allergy and Clinical Immunology. EAACI Molecular Allergology User&#8217;s Guide<\/a><\/p><p><a href=\"https:\/\/spaic.pt\/\" target=\"_blank\" rel=\"dofollow noopener\">Sociedade Portuguesa de Alergologia e Imunologia Cl\u00ednica. Relat\u00f3rio do Observat\u00f3rio Nacional das Doen\u00e7as Respirat\u00f3rias<\/a><\/p><p><a href=\"https:\/\/ginasthma.org\/\" target=\"_blank\" rel=\"dofollow noopener\">Global Initiative for Asthma. Global Strategy for Asthma Management and Prevention<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Introdu\u00e7\u00e3o As alergias s\u00e3o uma das condi\u00e7\u00f5es cr\u00f3nicas mais prevalentes a n\u00edvel mundial, afetando mais de 150 milh\u00f5es de europeus e cerca de 30 % da popula\u00e7\u00e3o portuguesa, segundo dados da Sociedade Portuguesa de Alergologia e Imunologia Cl\u00ednica (SPAIC). A preval\u00eancia das doen\u00e7as al\u00e9rgicas tem aumentado consistentemente nas \u00faltimas d\u00e9cadas, particularmente nos pa\u00edses industrializados. Uma [&hellip;]<\/p>\n","protected":false},"author":13102,"featured_media":59229,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[253],"tags":[],"class_list":["post-58865","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-alergologia"],"jetpack_featured_media_url":"https:\/\/www.mediconanet.pt\/wp-content\/uploads\/2026\/03\/wpimage-id893sizeSlugfulllinkDestinationnone-figure-classwp-block-image-size-fullimg-srchttpscomprarcbdonline.ptwp-contentuploads202603unnamed-3.jpg-altFrasco-de-vidro-transparente-c-91.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.mediconanet.pt\/en\/wp-json\/wp\/v2\/posts\/58865","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mediconanet.pt\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mediconanet.pt\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mediconanet.pt\/en\/wp-json\/wp\/v2\/users\/13102"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mediconanet.pt\/en\/wp-json\/wp\/v2\/comments?post=58865"}],"version-history":[{"count":13,"href":"https:\/\/www.mediconanet.pt\/en\/wp-json\/wp\/v2\/posts\/58865\/revisions"}],"predecessor-version":[{"id":59278,"href":"https:\/\/www.mediconanet.pt\/en\/wp-json\/wp\/v2\/posts\/58865\/revisions\/59278"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mediconanet.pt\/en\/wp-json\/wp\/v2\/media\/59229"}],"wp:attachment":[{"href":"https:\/\/www.mediconanet.pt\/en\/wp-json\/wp\/v2\/media?parent=58865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mediconanet.pt\/en\/wp-json\/wp\/v2\/categories?post=58865"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mediconanet.pt\/en\/wp-json\/wp\/v2\/tags?post=58865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}