{"id":52790,"date":"2025-04-25T22:08:38","date_gmt":"2025-04-26T02:08:38","guid":{"rendered":"https:\/\/www.hancockhealth.org\/mayo-health-library\/blood-clots\/"},"modified":"2026-02-04T12:12:09","modified_gmt":"2026-02-04T17:12:09","slug":"blood-clots","status":"publish","type":"mayo","link":"https:\/\/www.hancockhealth.org\/zh\/mayo-health-library\/blood-clots\/","title":{"rendered":"Blood clots"},"content":{"rendered":"<div class=\"container mx-auto   wordpress-block wordpress- core-\">\n<p>Blood clots are gel-like clumps of blood. When they form in response to a cut or other injury, they stop the bleeding by plugging the injured blood vessel. These blood clots help the body heal.<\/p>\n<p>But some blood clots form inside the veins without a good reason. They don&#8217;t dissolve naturally. These clots may require medical attention, especially if they are in the legs, lungs or brain. A number of conditions can cause this type of blood clot.<\/p>\n<p>Blood clots are made when substances in the blood thicken and form a semisolid mass. This process may be triggered by an injury. Sometimes it occurs inside blood vessels that don&#8217;t have an obvious injury.<\/p>\n<p>Once these clots form, they can travel to other parts of the body where they can cause harm. There are a variety of factors and conditions that can cause troublesome blood clots, and there are some serious conditions that are associated with blood clots. These include:<\/p>\n<ul>\n<li>Antiphospholipid syndrome <\/li>\n<li>Arteriosclerosis \/ atherosclerosis <\/li>\n<li>\u764c\u75c7 <\/li>\n<li>Certain medications, such as oral contraceptives and hormone therapy drugs<\/li>\n<li>Coronavirus disease 2019 (COVID-19) <\/li>\n<li>Deep vein thrombosis (DVT) <\/li>\n<li>Factor V Leiden <\/li>\n<li>Family history of blood clots<\/li>\n<li>Heart arrhythmia <\/li>\n<li>Heart attack <\/li>\n<li>Heart failure &mdash; a condition in which the heart doesn&#8217;t pump blood as well as it should.<\/li>\n<li>\u80a5\u80d6 <\/li>\n<li>Peripheral artery disease (PAD) <\/li>\n<li>Polycythemia vera &mdash; a type of blood cancer.<\/li>\n<li>Pregnancy<\/li>\n<li>Prolonged sitting or bed rest<\/li>\n<li>Pulmonary embolism <\/li>\n<li>\u62bd\u7159\u3002<\/li>\n<li>\u4e2d\u98a8 <\/li>\n<li>\u624b\u8853<\/li>\n<\/ul>\n<p>Seek emergency care if you experience:<\/p>\n<ul>\n<li>Cough that produces bloody sputum.<\/li>\n<li>A fast heartbeat.<\/li>\n<li>Lightheadedness.<\/li>\n<li>Difficult or painful breathing.<\/li>\n<li>Chest pain or tightness.<\/li>\n<li>Pain that spreads to the shoulder, arm, back or jaw.<\/li>\n<li>Sudden weakness or numbness of the face, arm or leg.<\/li>\n<li>Sudden difficulty speaking or understanding speech.<\/li>\n<\/ul>\n<p>Consult your health care provider if you develop these symptoms in an area on an arm or leg:<\/p>\n<ul>\n<li>Swelling.<\/li>\n<li>Change in skin color, such as an area on the leg that looks unusually red or purple.<\/li>\n<li>Warmth.<\/li>\n<li>Pain.<\/li>\n<\/ul>\n<h3>Self-care measures<\/h3>\n<p>To reduce the risk of developing blood clots, try these tips:<\/p>\n<ul>\n<li><strong>Avoid sitting for long periods.<\/strong> If you travel by airplane, walk the aisle now and then. For long car trips, stop frequently and walk around.<\/li>\n<li><strong>\u79fb\u52d5\u3002<\/strong> After you&#8217;ve had surgery or been on bed rest, the sooner you get up and move around, the better.<\/li>\n<li><strong>Drink plenty of fluids when traveling.<\/strong> Dehydration can increase the risk for blood clots.<\/li>\n<li><strong>Change your lifestyle.<\/strong> Lose weight, lower high blood pressure, stop smoking and exercise regularly.<\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Blood clots: Symptom &mdash; Overview covers definition, possible causes of this symptom.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","tags":[1686,1685,1682],"class_list":["post-52790","mayo","type-mayo","status-publish","hentry","tag-anatomical-structure","tag-condition","tag-person-group-concept","content_type-symptoms"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Blood clots - Hancock Health<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.hancockhealth.org\/zh\/mayo-health-library\/blood-clots\/\" \/>\n<meta property=\"og:locale\" content=\"zh_HK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Blood clots - Hancock Health\" \/>\n<meta property=\"og:description\" content=\"Blood clots: Symptom &mdash; 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