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Columbia Station, OH
A 29-year-old female asked:

1 large blackish bruise in same spot behind both knees. some pain in left leg. no swelling. could it be a blood clot?

1 doctor answer4 doctors weighed in
Dr. Corey Clay
Allergy and Immunology 11 years experience
Unlikely: Risk factors that increase the chance of blood clot include sitting for long periods of time (low blood flow), smoking, having personal or family history of clots, birth control or pregnancy, inflammatory diseases (eg Crohns or rheumatoid arthritis). The only way to know for sure is by ultrasound. If the pain on the left worsens or swelling begins to occur, then reasonable to see a physician.

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Last updated Mar 7, 2015

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