Hemophilia B


Bs, Hemophilia

Christmas Disease

Deficiencies, F9

Deficiencies, Factor IX

Deficiency, F9

Deficiency, Factor IX

Disease, Christmas

F9 Deficiencies

F9 Deficiency

Factor IX Deficiencies

Factor IX Deficiency

Haemophilia B

Haemophilia Bs

Hemophilia B Leyden

Hemophilia B(M)

Hemophilia Bs

Hemophilia Bs (M)

Plasma Thromboplastin Component Deficiency

A deficiency of blood coagulation factor IX inherited as an X-linked disorder. (Also known as Christmas Disease, after the first patient studied in detail, not the holy day.) Historical and clinical features resemble those in classic hemophilia (HEMOPHILIA A), but patients present with fewer symptoms. Severity of bleeding is usually similar in members of a single family. Many patients are asymptomatic until the hemostatic system is stressed by surgery or trauma. Treatment is similar to that for hemophilia A. (From Cecil Textbook of Medicine, 19th ed, p1008)

See Also