Blood clotting is a complex process involving as many as 20 different proteins in blood plasma. These proteins are called blood coagulation factors.
Factor V deficiency is caused by a lack of Factor V. When certain blood clotting factors are low or missing, your blood does not clot properly.
Factor V deficiency is rare. It may be caused by:
- A defective Factor V gene passed down through families (inherited)
- An antibody that interferes with normal Factor V function
You can get an antibody that interferes with Factor V:
- After giving birth
- After being treated with a certain type of fibrin glue
- After surgery
- With autoimmune diseases and certain cancers
Sometimes the cause is unknown.
The disease is similar to hemophilia, except bleeding into joints is less common. In the inherited form of Factor V deficiency, a family history of a bleeding disorder is a risk factor.