{"id":2904,"date":"2026-01-29T17:22:52","date_gmt":"2026-01-29T14:22:52","guid":{"rendered":"https:\/\/wiki.dev.voka.io\/glossary\/macula\/"},"modified":"2026-01-29T17:22:56","modified_gmt":"2026-01-29T14:22:56","slug":"macula","status":"publish","type":"glossary_item","link":"https:\/\/wiki.dev.voka.io\/pt\/glossario\/macula\/","title":{"rendered":"Macula"},"content":{"rendered":"\n<p>Uma m\u00e1cula (do latim <em>macula<\/em> &#8211; mancha) \u00e9 um elemento morfol\u00f3gico prim\u00e1rio, sem manchas, de uma erup\u00e7\u00e3o cut\u00e2nea caracterizada por uma altera\u00e7\u00e3o da cor da pele numa \u00e1rea limitada.  <\/p>\n\n<p>A principal carater\u00edstica distintiva da borbulha \u00e9 o facto de n\u00e3o se elevar acima do n\u00edvel da pele saud\u00e1vel e n\u00e3o ser afundada (n\u00e3o palp\u00e1vel). Se fechares os olhos e passares o dedo sobre a mancha, n\u00e3o sentir\u00e1s qualquer altera\u00e7\u00e3o no relevo da pele. <\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x44D;&#x442;&#x438;&#x43E;&#x43B;&#x43E;&#x433;&#x438;&#x44F;-&#x438;-&#x43F;&#x430;&#x442;&#x43E;&#x444;&#x438;&#x437;&#x438;&#x43E;&#x43B;&#x43E;&#x433;&#x438;&#x44F;\"><strong>Etiologia e fisiopatologia<\/strong><\/h2>\n\n<p>A mudan\u00e7a de cor pode ser causada por uma variedade de mecanismos:  <\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Manchas vasculares:<\/strong> Associadas a uma dilata\u00e7\u00e3o tempor\u00e1ria ou persistente dos vasos sangu\u00edneos (ros\u00e9ola, eritema, telangiectasia). Desaparecem ou tornam-se p\u00e1lidas quando se aplica press\u00e3o (diascopia).  <\/li>\n\n\n\n<li><strong>Manchas hemorr\u00e1gicas:<\/strong> Ocorrem quando os gl\u00f3bulos vermelhos escapam dos vasos para os tecidos (pet\u00e9quias, equimoses). N\u00e3o desaparecem com a aplica\u00e7\u00e3o de press\u00e3o.  <\/li>\n\n\n\n<li><strong>Manchas de idade:<\/strong> Associadas a altera\u00e7\u00f5es na quantidade de pigmento melanina. Podem ser hiperpigmentadas (sardas, cloasma) ou despigmentadas (vitiligo). <\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x43A;&#x43B;&#x438;&#x43D;&#x438;&#x447;&#x435;&#x441;&#x43A;&#x43E;&#x435;-&#x437;&#x43D;&#x430;&#x447;&#x435;&#x43D;&#x438;&#x435;\"><strong>Significado cl\u00ednico<\/strong><\/h2>\n\n<p>O tamanho da mancha tem implica\u00e7\u00f5es na terminologia: as manchas at\u00e9 1-2 cm de di\u00e2metro s\u00e3o normalmente designadas por ros\u00e9ola (se forem vasculares) ou simplesmente m\u00e1culas; os focos maiores s\u00e3o designados por eritema. As m\u00e1culas s\u00e3o o elemento mais comum da erup\u00e7\u00e3o cut\u00e2nea e ocorrem numa grande variedade de doen\u00e7as: desde infec\u00e7\u00f5es (sarampo, rub\u00e9ola) a reac\u00e7\u00f5es al\u00e9rgicas. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Uma m\u00e1cula (do latim <em>macula<\/em> &#8211; mancha) \u00e9 um elemento morfol\u00f3gico prim\u00e1rio, sem manchas, de uma erup\u00e7\u00e3o cut\u00e2nea caracterizada por uma altera\u00e7\u00e3o da cor da pele numa \u00e1rea limitada. <\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-2904","glossary_item","type-glossary_item","status-publish","hentry"],"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>Macula: defini\u00e7\u00e3o m\u00e9dica e vis\u00e3o geral | Voka Wiki<\/title>\n<meta name=\"description\" content=\"Uma m\u00e1cula (do latim macula - mancha) \u00e9 um elemento morfol\u00f3gico prim\u00e1rio, sem manchas, de uma erup\u00e7\u00e3o cut\u00e2nea caracterizada por uma altera\u00e7\u00e3o da cor da pele numa \u00e1rea limitada.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Macula\" \/>\n<meta property=\"og:description\" content=\"Uma m\u00e1cula (do latim macula - 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