Definition

By Mayo Clinic Staff

Blood clots are gel-like clumps of blood. They are beneficial when they form in response to an injury or a cut, plugging the injured blood vessel, which stops bleeding.

Some blood clots form inside your veins without a good reason and don't dissolve naturally. These may require medical attention, especially if they are in your legs or are in more critical locations, such as your lungs and brain. A number of conditions can cause this type of blood clot.

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Feb. 25, 2021

See also

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  4. Essential thrombocythemia
  5. Mitral valve stenosis
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  7. Pancreatic Cancer
  8. What is pancreatic cancer? A Mayo Clinic expert explains
  9. Infographic: Pancreatic Cancer: Minimally Invasive Surgery
  10. Pancreatic Cancer Survivor
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  12. Varicose veins
  13. Endovenous thermal ablation