{"id":6595,"date":"2026-04-16T13:54:14","date_gmt":"2026-04-16T10:54:14","guid":{"rendered":"https:\/\/wiki.dev.voka.io\/glossary\/commotion-cerebrale\/"},"modified":"2026-05-04T16:12:58","modified_gmt":"2026-05-04T13:12:58","slug":"commotion-cerebrale","status":"publish","type":"glossary_item","link":"https:\/\/wiki.dev.voka.io\/fr\/glossaire\/commotion-cerebrale\/","title":{"rendered":"Commotion c\u00e9r\u00e9brale"},"content":{"rendered":"\n<p>La commotion c\u00e9r\u00e9brale (du latin <em>concussio<\/em> \u2014 secousse) est la forme la plus courante et la plus l\u00e9g\u00e8re de traumatisme cr\u00e2nien, caract\u00e9ris\u00e9e par une perturbation temporaire des fonctions du syst\u00e8me nerveux sans la formation de dommages macroscopiques visibles du tissu c\u00e9r\u00e9bral.<\/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>\u00c9tiologie et physiopathologie<\/strong><\/h2>\n\n<p>La pathogen\u00e8se repose sur une atteinte exclusivement fonctionnelle et microscopique des cellules nerveuses, et non structurelle. Le m\u00e9canisme de la blessure est g\u00e9n\u00e9ralement associ\u00e9 \u00e0 une acc\u00e9l\u00e9ration, un freinage ou une rotation brutale de la t\u00eate (par exemple, en cas de chute, d&rsquo;impact ou d&rsquo;accident de la route). <\/p>\n\n<p>Au niveau cellulaire, une cascade neurom\u00e9tabolique fausse est d\u00e9clench\u00e9e. Les membranes cellulaires des neurones s&rsquo;\u00e9tirent temporairement, provoquant une sortie chaotique des ions potassium vers l&rsquo;ext\u00e9rieur et une entr\u00e9e massive de calcium dans la cellule. Une crise \u00e9nerg\u00e9tique aigu\u00eb se d\u00e9veloppe : le cerveau a besoin de beaucoup de glucose pour r\u00e9tablir l&rsquo;\u00e9quilibre, mais en raison d&rsquo;un spasme des capillaires, son apport diminue consid\u00e9rablement. Cette \u00ab\u00a0famine \u00e9nerg\u00e9tique\u00a0\u00bb temporaire des cellules cause les sympt\u00f4mes.<\/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>Importance clinique<\/strong><\/h2>\n\n<p>Le tableau clinique se d\u00e9veloppe imm\u00e9diatement apr\u00e8s le coup. Les signes classiques comprennent une perte de conscience temporaire (de quelques secondes \u00e0 quelques minutes), une confusion, un mal de t\u00eate intense, des naus\u00e9es et des vomissements isol\u00e9s. Un sympt\u00f4me particuli\u00e8rement sp\u00e9cifique est l&rsquo;amn\u00e9sie \u2014 le patient ne peut pas se souvenir des \u00e9v\u00e9nements imm\u00e9diatement avant ou apr\u00e8s la blessure.<\/p>\n\n<p>Le diagnostic repose sur les sympt\u00f4mes cliniques. Les tomodensitogrammes standard ou les IRM ne montrent aucun saignement, \u0153d\u00e8me ou fracture en cas de commotion pure. Le traitement est de nature conservatrice et repose sur un repos cognitif et physique strict (limitation de l&rsquo;utilisation des \u00e9crans, de la lecture et de l&rsquo;effort) pour donner au cerveau le temps de r\u00e9tablir son \u00e9quilibre \u00e9nerg\u00e9tique.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La commotion c\u00e9r\u00e9brale (du latin <em>concussio<\/em> \u2014 secousse) est la forme la plus courante et la plus l\u00e9g\u00e8re de traumatisme cr\u00e2nien, caract\u00e9ris\u00e9e par une perturbation temporaire des fonctions du syst\u00e8me nerveux sans la formation de dommages macroscopiques visibles du tissu c\u00e9r\u00e9bral.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-6595","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>Commotion 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