Definition

Noun: * A hereditary blood clotting disorder: Hemophilia B is an inherited condition that impairs the body's ability to form blood clots, leading to prolonged bleeding. It is caused by a deficiency or dysfunction of a specific blood protein called coagulation factor IX.

Usage

• Hemophilia B is a specific type of hemophilia, distinct from the more common hemophilia A.
• The condition is also historically known as Christmas disease, named after the first patient diagnosed with it.
• It is an X-linked recessive disorder, meaning it primarily affects males, while females are typically carriers.

Examples

• Noun:
  • The patient was diagnosed with hemophilia B after experiencing unexplained joint bleeding.
  • Treatment for hemophilia B often involves regular infusions of factor IX concentrate.
  • Genetic counseling is recommended for families with a history of hemophilia B.

Advanced Usage

• "Factor IX deficiency": This is the precise physiological description of hemophilia B and is often used in medical contexts.
  • The laboratory test confirmed a severe factor IX deficiency.

Variants and Related Words

• Christmas disease (n): A synonym for hemophilia B.
• Factor IX (n): The specific clotting factor that is deficient in hemophilia B.
• Coagulopathy (n): A general term for any disorder of blood coagulation.
• Hemophiliac (n): A person who has hemophilia (either type A or B).

Synonyms

• Christmas disease
• Factor IX deficiency

Related Terms (Medical Context)

• Hemophilia A: A different, more common type of hemophilia caused by a deficiency of factor VIII.
• von Willebrand disease: Another inherited bleeding disorder, distinct from hemophilia.
• Replacement therapy: The standard treatment for hemophilia B, involving intravenous infusion of factor IX.

Noun

1. a clotting disorder similar to hemophilia A but caused by a congenital deficiency of factor IX