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Hemophilia

Hemophilia: An Overview

The Latest in Hemophilia

Hemophilia Definition

Definition

Hemophilia is a group of bleeding disorders. It is caused by low amounts of specific clotting factors. These factors help to stop bleeding.

The most common types of hemophilia are:

  • Hemophilia A (classic hemophilia)—accounts for 80% of all hemophilia (1 in 5,000 males), caused by too little factor VIII
  • Hemophilia B (Christmas disease)—occurs in 1 in 25,000 males, caused by too little factor IX

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