What does "Factor V Leiden deficiency" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
Factor V Leiden deficiency is a condition that increases the chance of developing abnormal blood clots in veins, a condition known as venous thromboembolism. It is a genetic disorder, meaning it is passed down through families. People with this condition have a specific mutation in one of the proteins involved in blood clotting. This mutation can cause the blood to clot too much, which can lead to various health problems.
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