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What are the symptoms of factor V Leiden?

ANSWER

Some people with factor V Leiden may never know they have it. When there are signs of it, the first is usually a clot somewhere in the body. The clots can be minor or life-threatening, depending on where they are. The signs of a clot include:

A deep vein clot (DVT) typically shows up in your leg. It causes the same symptoms but with more swelling.

  • Pain
  • Redness
  • Swelling
  • Warmth

SOURCES:

American Society of Hematology: "Blood Clots."

CDC: "Venous Thromboembolism (Blood Clots)."

GeneFacts: "Factor V Leiden-associated Thrombosis."

Mayo Clinic: "Factor V Leiden."

National Blood Clot Alliance: "Factor V Leiden Resources."

National Human Genome Research Institute: "Learning About Factor V Leiden Thrombophilia."

NIH U.S. National Library of Medicine Genetics Home Reference: "factor V Leiden thrombophilia."

World Federation of Hemophilia: "What are rare clotting factor deficiencies?

Reviewed by Nayana Ambardekar on July 15, 2018

SOURCES:

American Society of Hematology: "Blood Clots."

CDC: "Venous Thromboembolism (Blood Clots)."

GeneFacts: "Factor V Leiden-associated Thrombosis."

Mayo Clinic: "Factor V Leiden."

National Blood Clot Alliance: "Factor V Leiden Resources."

National Human Genome Research Institute: "Learning About Factor V Leiden Thrombophilia."

NIH U.S. National Library of Medicine Genetics Home Reference: "factor V Leiden thrombophilia."

World Federation of Hemophilia: "What are rare clotting factor deficiencies?

Reviewed by Nayana Ambardekar on July 15, 2018

NEXT QUESTION:

What are the symptoms of a pulmonary embolism related to factor V Leiden?

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