World Thrombosis Day

World Thrombosis Day From Head to Toe, Take Control. World Thrombosis Day is a global campaign of the ISTH that raises awareness of thrombosis on Oct. 13.
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Celebrated year round, World Thrombosis Day (WTD) is recognized on 13 October. WTD focuses attention on the often overlooked and misunderstood disease of thrombosis. With thousands of educational events in countries around the world, WTD and its partners place a global spotlight on thrombosis as an urgent and growing health problem. Bringing together communities around the world to

, the quiet, underlying disorder that is the common mechanism of the world’s three top cardiovascular killers – heart attack, stroke and venous thromboembolism (VTE) – the International Society on Thrombosis and Haemostasis (ISTH) launched WTD in 2014. Partnering with thrombosis societies from every continent of the world, the ISTH teams up with continental cardiovascular, neurology and hematology organizations in the effort to educate the public, health care professionals and policy makers about thrombosis risks, prevention and treatment. More than 5,000 partners from every continent of the world have pledged their support to WTD, with more joining every day. For a list of those organizations and for those interested in making the pledge and joining the effort, visit www.worldthrombosisday.org. We invite you to participate! To join the movement now, visit: www.worldthrombosisday.org/join/. Supporter Disclosure: The WTD campaign is supported by the following organizations: BMS/Pfizer Alliance, Bayer, Cardinal Health, Inari Medical, Leo Pharma, Roche, AstraZeneca, Penumbra, Regeneron, Total CME, Urban Emu and Viatris

Photo Disclaimer: If you submit a photo through the WTD website or social media pages, you grant permission for the campaign to share the submitted photo on its website and/or in its yearly impact report. The campaign maintains all rights to images as they relate to the campaign, any distribution or use thereof. The campaign is not legally liable for any reproduction of images. If you have questions or wish to remove a photo, email us at wtd@isth.org.

Myth vs. Fact: MYTH! Blood clot risk does not begin and end in the delivery room. In reality, risk is elevated throughou...
04/27/2026

Myth vs. Fact: MYTH! Blood clot risk does not begin and end in the delivery room. In reality, risk is elevated throughout all three trimesters and peaks in the first 6 to 12 weeks postpartum. The entire pregnancy journey requires vigilance.

Know your risks at every stage at WorldThrombosisDay.org.

04/24/2026
Behind every blood clot is a story that deserves to be heard. By sharing your experience, you can help others feel less ...
04/23/2026

Behind every blood clot is a story that deserves to be heard. By sharing your experience, you can help others feel less alone and more informed. Your story could be the reason someone seeks care in time.

Submit your and make an impact: bit.ly/4b6xt5h

Surviving a silent threat. 💙At 31 weeks pregnant, 27‑year‑old Elizabeth Simms almost dismissed her shortness of breath a...
04/22/2026

Surviving a silent threat. 💙At 31 weeks pregnant, 27‑year‑old Elizabeth Simms almost dismissed her shortness of breath as anxiety. Instead, listening to her instincts saved her life. Elizabeth was diagnosed with a pulmonary embolism, a serious and potentially life‑threatening blood clot in the lungs. Thanks to prompt care and innovative treatment, she recovered and later welcomed a healthy baby boy.

Her story is a powerful reminder that blood clots can happen to anyone, even during an otherwise healthy pregnancy—and that recognizing symptoms and seeking care early can make all the difference.

Read more about her inspiring story here: https://www.cbsnews.com/cbslocal/news/pulmonary-embolism-journey-penumbra-sponsored-houston/

I just took the pledge to improve care for patients with VTE. By uniting with fellow healthcare professionals, we can help patients receive the right treatment at the right time with access to a broad spectrum of resources and innovative treatments. Let’s work together to help save ...

Myth vs. Fact: While blood clots are often associated with the legs, they can form in veins throughout the body includin...
04/21/2026

Myth vs. Fact: While blood clots are often associated with the legs, they can form in veins throughout the body including the lungs, arms, abdomen and brain. Each location carries different symptoms and risks. Knowing where clots can occur helps you recognize warning signs early. Get the facts at WorldThrombosisDay.org.

Nearly 900,000 Americans experience a blood clot each year—and recognizing the signs early can save lives.When Elizabeth...
04/20/2026

Nearly 900,000 Americans experience a blood clot each year—and recognizing the signs early can save lives.

When Elizabeth, 31 weeks pregnant, suddenly had trouble breathing, she went to the ER and was diagnosed with a life-threatening PE. Thanks to quick diagnosis and advanced treatment, she recovered quickly and later welcomed a healthy baby boy.

Stories like Elizabeth’s highlight why awareness and timely care matter. Our Get Out the Clot campaign is working to address gaps in VTE care, work toward standardized treatment and expand access to innovative therapies that improve patient outcomes. Learn five important facts about blood clots: www.usatoday.com/story/sponsor-story/get-out-the-clot/2026/04/09/blood-clots-five-facts-you-need-to-know/89500060007/

Blood clot risk builds throughout pregnancy and peaks in the weeks after delivery. Every trimester is an opportunity to ...
04/20/2026

Blood clot risk builds throughout pregnancy and peaks in the weeks after delivery. Every trimester is an opportunity to assess your risk and know the warning signs.

Talk to your provider and learn what to watch for at WorldThrombosisDay.org.

Dealing with hot flashes or other menopause symptoms? A history of blood clots does not mean you have to suffer in silen...
04/18/2026

Dealing with hot flashes or other menopause symptoms? A history of blood clots does not mean you have to suffer in silence. Transdermal hormone therapy and non-hormonal alternatives can provide relief with a lower clot risk than oral HRT. Talk to your doctor and visit WorldThrombosisDay.org.

From clots to bleeding and everything in between, blood health touches every life. 🌍 is proud to recognize on April 1...
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From clots to bleeding and everything in between, blood health touches every life. 🌍 is proud to recognize on April 17 and the incredible advocates, researchers and patients who make this community so powerful.

Together, we're building a world that takes ALL blood disorders seriously.

Myth vs. Fact: MYTH! Blood clots form silently. By the time symptoms appear, the clot has already developed. This is exa...
04/16/2026

Myth vs. Fact: MYTH!

Blood clots form silently. By the time symptoms appear, the clot has already developed. This is exactly why knowing your personal risk factors and taking preventive steps matters so much.

Do not wait for symptoms to take action. Learn how to protect yourself at WorldThrombosisDay.org.

: After her first blood clot following childbirth, Perminder thought it was behind her—but years later, a second clot l...
04/14/2026

: After her first blood clot following childbirth, Perminder thought it was behind her—but years later, a second clot led to a much more serious diagnosis, including multiple pulmonary emboli and an underlying condition she never knew she had. Her story is a powerful reminder that blood clots can happen to anyone. Stay informed, know the signs and listen to your body. 💫

Do you have an inspiring experience or a cautionary story? Share it with us here: bit.ly/4b6xt5h

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