Stroke - What Is a Stroke?

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breadcrumbs-container"><div class="breadcrumbs"><ul> <li class='breadcrumb-home'><a href='/'>Home</a></li><li class='breacrumb-break'><i class="fas fa-angle-right"></i></li><li class='breadcrumb-parent'><a href='/node/93751'><span class='back-to'> < Back To </span>Health Topics</a></li><li class='breacrumb-break'><i class="fas fa-angle-right"></i></li><li class='breadcrumb-current'>Stroke</li></ul></div></div> </div> <div class="view-content"> <div class="subnav-menu-wrapper responsive-container responsive-container-constrained component-health-topics-red"> <ul class="subnav-menu"> <li class="nav-active-trail nav-active section-menu-item subnav-link"> <a href="/health/stroke" aria-label="What Is a Stroke?-Stroke" hreflang="en">What Is a Stroke?</a> </li> <li class="section-menu-item subnav-link"> <a href="/health/stroke/symptoms" aria-label="Symptoms-Stroke" hreflang="en">Symptoms</a> </li> <li class="section-menu-item subnav-link"> <a href="/health/stroke/diagnosis" aria-label="Diagnosis-Stroke" hreflang="en">Diagnosis</a> </li> <li class="section-menu-item subnav-link"> <a href="/health/stroke/causes" aria-label="Causes and Risk Factors-Stroke" hreflang="en">Causes and Risk Factors</a> </li> <li class="section-menu-item subnav-link"> <a href="/health/stroke/treatment" aria-label="Treatment-Stroke" hreflang="en">Treatment</a> </li> <li class="section-menu-item subnav-link"> <a href="/health/stroke/recovery" aria-label="Recovery-Stroke" hreflang="en">Recovery</a> </li> <li class="section-menu-item subnav-link"> <a href="/health/stroke/pregnancy" aria-label="Stroke During Pregnancy-Stroke" hreflang="en">Stroke During Pregnancy</a> </li> </ul> </div> </div> </div> </div> <div class="block block-nhlbi-health-topics block-nhlbi-health-topics-more-info"> <div class="field field--name-field-component-more-information field--type-entity-reference-revisions field--label-hidden field__item"> <div class="paragraph paragraph--type--component-more-information paragraph--view-mode--default responsive-container responsive-container-constrained component-more-information component-more-information-theme-red"> <div class="health-topics-more-information"> <p>MORE INFORMATION</p> <div class="clinical-trials-info-link"> <i class="fas fa-notes-medical"></i> <a href="/research/clinical-trials?f%5B0%5D=disease_or_condition_name%3AStroke"> Participate in a Study </a> </div> <div class="publications-info-link"> <i class="fas fa-book-open"></i> <a href="/resources?f%5B0%5D=related_health_topics%3AStroke"> Fact Sheets and Handouts </a> </div> <div class="research-info-link"> <i class="fas fa-microscope"></i> <a href="/research/stroke"> Research </a> </div> </div> </div> </div> </div> </div> <div class="layout__region layout__region--second"> <div class="field field--name-field-health-topic node-theme-red field__item block block-nhlbi-health-topics block-nhlbi-health-topics-book-name"> <div>Stroke</div> </div> <div class="block block-layout-builder block-field-blocknodehealth-topicstitle"> <h1 class="field field--name-title field--type-string field--label-hidden responsive-container responsive-container-constrained field__item"><span class="ht-kicker">Stroke </span>What Is a Stroke?<hr> </h1> </div> <div class="block block-addtoany block-addtoany-block"> <div class="responsive-container responsive-container-constrained"> <span class="a2a_kit a2a_kit_size_24 addtoany_list" data-a2a-url="https://www.nhlbi.nih.gov/health/stroke" data-a2a-title="What Is a Stroke?"> <a class="a2a_dd addtoany_share" href="https://www.addtoany.com/share#url=https%3A%2F%2Fwww.nhlbi.nih.gov%2Fhealth%2Fstroke&title=What%20Is%20a%20Stroke%3F"> <img src="/themes/custom/nhlbi/images/share-alt-icon.svg" alt="Share"> </a> <a class="a2a_button_email"></a> <a class="a2a_button_print"></a> </span> </div> </div> <div class="language-switcher-language-url block block-language block-language-blocklanguage-content" role="navigation"> <div class="responsive-container responsive-container-constrained"><h2 class="visually-hidden" aria-label="Switch to Espanol">Language switcher</h2><ul class="links"><li hreflang="en" data-drupal-link-system-path="node/92838" class="is-active" aria-current="page"><a href="/health/stroke" class="language-link is-active" hreflang="en" data-drupal-link-system-path="node/92838" aria-current="page">English</a></li><li hreflang="es" data-drupal-link-system-path="node/92838"><a href="/es/salud/accidente-cerebrovascular" class="language-link" hreflang="es" data-drupal-link-system-path="node/92838">Espa帽ol</a></li></ul> </div> </div> <div class="block block-layout-builder block-field-blocknodehealth-topicsfield-component-page-links"> </div> <div class="block block-layout-builder block-field-blocknodehealth-topicsfield-component-sections"> <div class="field field--name-field-component-sections field--type-entity-reference-revisions field--label-hidden"> <div class='field__items'> <div class="paragraph component component-section component-theme-white component-section-theme-white component-section-node-theme- paragraph--type--component-section paragraph--view-mode--default"> <div class="responsive-container responsive-container-constrained"> <div class="field field--name-field-component-section-content field--type-text-long field--label-hidden clearfix field__item"><p>A stroke can occur when blood flow to the brain is blocked or there is sudden bleeding in the brain. There are two types of strokes. A stroke that occurs because blood flow to the brain is blocked is called an ischemic stroke. The brain cannot get oxygen and nutrients from the blood. Without oxygen and nutrients, brain cells begin to die within minutes. A stroke that occurs because of sudden bleeding in the brain is called a hemorrhagic stroke. The leaked blood results in pressure on brain cells, damaging them.</p> <p>Just under 90% of strokes involve blocked blood vessels (ischemic), and the rest involve internal bleeding (hemorrhagic). Strokes are further classified based on where in the brain the blockage or bleeding occurs.</p> <p>A stroke is a medical emergency. A stroke can cause lasting brain damage, long-term disability, or even death. Signs of a stroke can range from mild weakness to paralysis or numbness on one side of the face or body. Other signs may include a sudden and severe headache, sudden weakness, trouble seeing, and trouble speaking or understanding speech.</p> <p><strong>If you think you or someone else may be having a stroke, call 9-1-1 right away.</strong> Do not drive to the hospital or let someone else drive you. Call an ambulance so that medical personnel can begin lifesaving treatment on the way to the emergency room. During a stroke, <strong>every minute counts.</strong></p> <p>At the hospital, a stroke team will assess your condition and treat your stroke with medicine, surgery, or another procedure. Your recovery will depend on how serious your stroke was and how quickly you were treated. A rehabilitation plan may help you get back to what you used to do before you had a stroke.</p> <p><span class="entity-embed media entity-embed-nhlbi_video"></span></p><div class="embed-video-container embed-video-text-container-enabled align-right"> <div class="field field--name-field-video-url field--type-video-embed-field field--label-hidden field__item"><div class="video-embed-field-provider-youtube video-embed-field-responsive-video"><iframe width="854" height="480" frameborder="0" allowfullscreen="allowfullscreen" title="Stroke Animation - Learn About the Types of Strokes" src="https://www.youtube.com/embed/UJ5aO4KmQ8M?autoplay=0&start=0&rel=0&enablejsapi=1"></iframe> </div> </div> <div class="embed-video-text-container"> <div class="field field--name-field-video-description field--type-text-long field--label-hidden field__item"><p><strong>Types of strokes.</strong> The most common type of stroke is ischemic stroke. This happens when plaque or a blood clot blocks blood flow to an artery in or on the brain. Hemorrhagic stroke is less common. This happens when a blood vessel breaks open and leaks blood into the brain. A transient ischemic attack (TIA) is similar to an ischemic stroke, but the blood clot breaks up after a short time, usually before there is long-term damage. <a href="http://www.nucleuscatalog.com/" rel="noreferrer">Medical Animation Copyright 漏 2023 Nucleus Medical Media, All rights reserved</a>.</p></div> </div> </div></div> </div> </div> </div> </div> </div> <div class="block block-nhlbi-health-topics block-nhlbi-book-nav-block"> <nav id="book-navigation-92330" class="book-navigation responsive-container-constrained" role="navigation" aria-labelledby="book-label-92330"> <h3 class="visually-hidden" id="book-label-92330">Book traversal links for What Is a Stroke?</h3> <ul class="book-pager"> <li class="book-pager__item book-pager__item--next"> <h4 class="nav-label">Next</h4> <a href="/health/stroke/symptoms" rel="next" title="Go to next page">Symptoms <i class="fas fa-angle-right"></i></a> </li> </ul> </nav> </div> </div> </div> <div class="layout layout--onecol"> <div 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