{"id":1457,"date":"2025-09-18T16:25:21","date_gmt":"2025-09-18T13:25:21","guid":{"rendered":"https:\/\/wiki.voka.io\/glossary\/dermatomo\/"},"modified":"2025-10-14T13:06:49","modified_gmt":"2025-10-14T10:06:49","slug":"dermatomo","status":"publish","type":"glossary_item","link":"https:\/\/wiki.voka.io\/pt\/glossario\/dermatomo\/","title":{"rendered":"Derm\u00e1tomo"},"content":{"rendered":"\n<p>Um derm\u00e1tomo \u00e9 uma \u00e1rea da pele inervada por fibras nervosas sensoriais provenientes de uma \u00fanica raiz nervosa espinhal (um \u00fanico segmento da medula espinhal). Cada um desses segmentos (exceto o primeiro cervical, C1) corresponde a uma determinada \u00e1rea na superf\u00edcie do corpo.<\/p>\n\n<p>Todos os derm\u00e1tomos do corpo formam, em conjunto, uma esp\u00e9cie de &#8220;mapa&#8221; de inerva\u00e7\u00e3o, que \u00e9 utilizado em neurologia para determinar o n\u00edvel de les\u00e3o da medula espinal ou das ra\u00edzes espinhais. As \u00e1reas dos derm\u00e1tomos adjacentes sobrep\u00f5em-se parcialmente, garantindo a fiabilidade do sistema sensorial.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x430;&#x43D;&#x430;&#x442;&#x43E;&#x43C;&#x438;&#x44F;-&#x438;-&#x444;&#x438;&#x437;&#x438;&#x43E;&#x43B;&#x43E;&#x433;&#x438;&#x44F;\"><strong>Anatomia e fisiologia<\/strong><\/h2>\n\n<p>Cada nervo espinal emerge do canal vertebral e transporta fibras sensitivas (aferentes) de uma \u00e1rea determinada da pele. Estas fibras transmitem informa\u00e7\u00e3o sobre o tato, dor, temperatura e press\u00e3o ao sistema nervoso central.<\/p>\n\n<p>O conjunto destas fibras, provenientes de uma \u00fanica raiz e a \u00e1rea inervada, designa-se por derm\u00e1tomo. Por exemplo, a raiz nervosa L5 inerva a pele da face anterior da perna e do dorso do p\u00e9.<\/p>\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>Signific\u00e2ncia cl\u00ednica<\/strong><\/h2>\n\n<p>O mapa de derm\u00e1tomos \u00e9 uma ferramenta fundamental no diagn\u00f3stico t\u00f3pico das doen\u00e7as neurol\u00f3gicas. Os sintomas (dor, dorm\u00eancia, formigueiro, erup\u00e7\u00e3o cut\u00e2nea) que correspondem exatamente aos limites de um ou mais derm\u00e1tomos indicam, com alta probabilidade, les\u00e3o da raiz nervosa correspondente.<\/p>\n\n<p>Exemplos cl\u00ednicos:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Radiculopatia.<\/strong> A compress\u00e3o ou inflama\u00e7\u00e3o da raiz espinhal (por exemplo, em caso de h\u00e9rnia discal) causa dor e altera\u00e7\u00e3o da sensibilidade estritamente na \u00e1rea do derm\u00e1tomo correspondente. Um exemplo cl\u00e1ssico \u00e9 a ci\u00e1tica.<\/li>\n\n\n\n<li><strong>Herpes zoster.<\/strong> O v\u00edrus da varicela (<em>Varicela zoster) <\/em>persiste nos g\u00e2nglios nervosos e, quando reativado, provoca uma erup\u00e7\u00e3o cut\u00e2nea dolorosa caracter\u00edstica que se propaga precisamente ao longo de um \u00fanico derm\u00e1tomo.<\/li>\n<\/ul>\n\n<p>A avalia\u00e7\u00e3o da sensibilidade em diferentes derm\u00e1tomos \u00e9 uma parte importante do exame neurol\u00f3gico, permitindo ao m\u00e9dico determinar o n\u00edvel de les\u00e3o do sistema nervoso.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Um derm\u00e1tomo \u00e9 uma \u00e1rea da pele inervada por fibras nervosas sensoriais provenientes de uma \u00fanica raiz nervosa espinhal (um \u00fanico segmento da medula espinhal). Cada um desses segmentos (exceto o primeiro cervical, C1) corresponde a uma determinada \u00e1rea na superf\u00edcie do corpo.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-1457","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>Derm\u00e1tomo: defini\u00e7\u00e3o m\u00e9dica e vis\u00e3o geral | Voka Wiki<\/title>\n<meta name=\"description\" content=\"Um derm\u00e1tomo \u00e9 uma \u00e1rea da pele inervada por fibras nervosas sensoriais provenientes de uma \u00fanica raiz nervosa espinhal (um \u00fanico segmento da medula espinhal). 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