{"id":6285,"date":"2026-03-16T13:02:08","date_gmt":"2026-03-16T10:02:08","guid":{"rendered":"https:\/\/wiki.dev.voka.io\/glossary\/parestesia\/"},"modified":"2026-04-16T13:55:29","modified_gmt":"2026-04-16T10:55:29","slug":"parestesia","status":"publish","type":"glossary_item","link":"https:\/\/wiki.dev.voka.io\/pt\/glossario\/parestesia\/","title":{"rendered":"Parestesia"},"content":{"rendered":"\n<p>Parestesia (do grego <em>para<\/em> \u2014 pr\u00f3ximo, desvio e <em>aisthesis<\/em> \u2014 sensa\u00e7\u00e3o) \u00e9 uma sensa\u00e7\u00e3o desagrad\u00e1vel qualitativamente alterada que surge espontaneamente na pele, sem qualquer est\u00edmulo f\u00edsico externo vis\u00edvel. <\/p>\n\n<p>Os pacientes geralmente descrevem esse fen\u00f4meno como &#8220;formigamento&#8221;, sensa\u00e7\u00e3o de alfinetes e agulhas, queima\u00e7\u00e3o ou como uma leve corrente el\u00e9trica.<\/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 base fisiopatol\u00f3gica desse sintoma \u00e9 a irrita\u00e7\u00e3o local das fibras sensoriais do nervo perif\u00e9rico, da raiz nervosa ou das vias sensoriais na medula espinhal. O impacto mec\u00e2nico leva \u00e0 altera\u00e7\u00e3o da permeabilidade dos canais i\u00f4nicos da membrana do ax\u00f4nio, gerando impulsos nervosos ect\u00f3picos (incorretos, ca\u00f3ticos).<\/p>\n\n<p>Na pr\u00e1tica traumatol\u00f3gica, a causa mais comum da parestesia \u00e9 a compress\u00e3o mec\u00e2nica aguda do nervo por fragmentos \u00f3sseos deslocados, hematoma crescente ou edema tecidual. O sintoma tamb\u00e9m pode ser causado por isquemia transit\u00f3ria do tronco nervoso, por exemplo, devido \u00e0 aplica\u00e7\u00e3o prolongada e inadequada de um torniquete hemost\u00e1tico em um membro.<\/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>Import\u00e2ncia cl\u00ednica<\/strong><\/h2>\n\n<p>A parestesia \u00e9 um importante marcador cl\u00ednico precoce de danos compressivo-isqu\u00eamicos ao sistema nervoso. Sua localiza\u00e7\u00e3o precisa no corpo permite ao m\u00e9dico diagnosticar com alta precis\u00e3o o n\u00edvel do nervo ou raiz afetado antes mesmo de realizar testes instrumentais.<\/p>\n\n<p>\u00c9 importante diferenciar claramente a parestesia da hiperestesia (sensibilidade aumentada \u00e0 dor ao toque comum) e da anestesia (perda total de qualquer sensa\u00e7\u00e3o). A parestesia que persiste ap\u00f3s a les\u00e3o \u00e9 um sinal de alarme que requer libera\u00e7\u00e3o cir\u00fargica imediata do nervo para evitar sua morte irrevers\u00edvel.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Parestesia (do grego <em>para<\/em> \u2014 pr\u00f3ximo, desvio e <em>aisthesis<\/em> \u2014 sensa\u00e7\u00e3o) \u00e9 uma sensa\u00e7\u00e3o desagrad\u00e1vel qualitativamente alterada que surge espontaneamente na pele, sem qualquer est\u00edmulo f\u00edsico externo vis\u00edvel. <\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-6285","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>Parestesia: defini\u00e7\u00e3o m\u00e9dica e vis\u00e3o geral | Voka Wiki<\/title>\n<meta name=\"description\" content=\"Parestesia (do grego para \u2014 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