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Symptoms

By Mayo Clinic staff

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Illustration showing blood clot in leg vein 
Blood clot in leg vein

In about half of all cases, deep vein thrombosis occurs without any noticeable symptoms.

When deep vein thrombosis symptoms occur, they can include:

  • Swelling in the affected leg, including swelling in your ankle and foot.
  • Pain in your leg; this can include pain in your ankle and foot. The pain often starts in your calf and can feel like cramping or a charley horse.
  • Warmth over the affected area.
  • Changes in your skin color, such as turning pale, red or blue.

When to see a doctor
If you develop signs or symptoms of deep vein thrombosis, contact your doctor for guidance.

If you develop signs or symptoms of a pulmonary embolism — a life-threatening complication of deep vein thrombosis — seek medical attention immediately.

The warning signs of a pulmonary embolism include:

  • Unexplained sudden onset of shortness of breath
  • Chest pain or discomfort that worsens when you take a deep breath or when you cough
  • Feeling lightheaded or dizzy, or fainting
  • Rapid pulse
  • Sweating
  • Coughing up blood
  • A sense of anxiety or nervousness
References
  1. Deep vein thrombosis. National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/health/dci/Diseases/Dvt/DVT_All.html. Accessed May 29, 2011.
  2. Goldhaber SZ. Deep venous thrombosis and pulmonary embolism. In: Fauci AS, et al. Harrison's Online. 17th ed. New York, N.Y.: The McGraw-Hill Companies. 2008. http://www.accessmedicine.com/content.aspx?aID=2880540&searchStr=deep+vein+thrombosis#2880540. Accessed May 28, 2011.
  3. Deep vein thrombosis (DVT). Society for Vascular Surgery. https://www.vascularweb.org/vascularhealth/Pages/deep-vein-thrombosis-(-dvt-)-.aspx?PF=1. Accessed May 28, 2011.
  4. Focus on blood clots. Vascular Disease Foundation. http://www.vdf.org/pdfs/VDF_FocusOnBloodClots.pdf. Accessed May 29, 2011.
  5. O'Connor MB, et al. Inflammatory bowel disease, such as ulcerative colitis, is a risk factor for recurrent thromboembolic events: A case report. Cases Journal. 2009;2:173.
  6. Being tall, obese may significantly increase risk of blood clots in deep veins. American Heart Association. http://www.newsroom.heart.org/index.php?s=43&item=1321. Accessed May 29, 2011.
  7. Alguire PC, et al. Post-thrombotic (postphlebitic) syndrome. http://www.uptodate.com/home/index.html. Accessed May 27, 2011.
  8. Lip GY, et al. Treatment of lower extremity deep vein thrombosis. http://www.uptodate.com/home/index.html. Accessed May 27, 2011.
  9. FDA expands use of Xarelto to treat, reduce recurrence of blood clots. U.S. Food and Drug Administration. http://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm326654.htm?source=govdelivery. Accessed Jan. 2, 2013.
DS01005 Jan. 19, 2013

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