Slowed blood flow, which can happen when you're not active for long periods of time.
Abnormal clotting problems, which make the blood clot too easily or too quickly.
Injury to the blood vessels, because blood is more
likely to clot in veins shortly after they are injured.
In this article
This information is produced and provided by the National
Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National
Institute via the Internet web site at http://
.gov or call 1-800-4-CANCER.
WebMD Medical Reference from Healthwise
January 16, 2014
This information is not intended to replace the advice of a doctor.
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