Rare Bleeding Disorders

Rare Bleeding Disorders

A total of 10 clotting factors are necessary to properly form a blood clot. Although deficiencies in factors VIII and IX are known to most people as hemophilia A and B, respectively, other less common factor deficiencies exist as well.1

Unlike hemophilia, rare factor deficiencies occur equally among men and women. In general, the gene is passed down in an autosomal recessive fashion. This means that when the factor deficiency is inherited from only one parent, the child will be a carrier of the condition, but usually will not have symptoms. In the rare instance that a factor deficiency is inherited through genes of both parents, the child will usually have a severe form of the disorder.1

Knowing your family history in detail is an important part of diagnosing a rare factor deficiency. To treat a rare factor deficiency, it is vital to identify the type of deficiency. A hematologist (a healthcare professional who specializes in treating blood disorders) will most often make the diagnosis.1

Learn more about the different types of rare factor deficiencies:


  1. Rare bleeding disorders. Bleeding and Clotting Disorders Institute website. http://www.ilbcdi.org/disorders-rare-bleeding-disorder.aspx. Accessed May 13, 2015.