Health Encyclopedia - Disease
Bleeding disorders are a group of conditions in which there is a problem with the body's blood clotting process. These disorders can lead to heavy and prolonged bleeding after an injury. Bleeding can also begin on its own.
Related problems include:
- Acquired platelet function defects
- Congenital platelet function defects
- Congenital protein C or S deficiency
- Disseminated intravascular coagulation (DIC)
- Factor II deficiency
- Factor V deficiency
- Factor VII deficiency
- Factor X deficiency
- Factor XII deficiency
- Hemophilia A
- Hemophilia B
- Hemophilia C (Factor XI deficiency)
- Idiopathic thrombocytopenic purpura (ITP)
- Von Willebrand's disease (types I, II, and III)
Normal blood clotting involves as many as 20 different plasma proteins. These are known as blood clotting or coagulation factors. These factors interact with other chemicals to form a substance called fibrin that stops bleeding.
Problems can occur when certain coagulation factors are low or missing. Bleeding problems can range from mild to severe.
Some bleeding disorders are present at birth and are passed through families (inherited). Others develop from:
- Illnesses such as vitamin K deficiency or severe liver disease
- Treatments such as the use of drugs to stop blood clots (anticoagulants) or the long-term use of antibiotics
Bleeding disorders can also result from a problem with the number or function of the blood cells that promote blood clotting (platelets). These disorders can also be either inherited or develop later (acquired). The side effects of certain drugs often lead to the acquired forms.
Exams and Tests
Treatment depends on the type of disorder. It may include:
- Factor replacement
- Fresh frozen plasma transfusion
- Platelet transfusion
- Other therapies
- Bleeding in the brain
- Severe bleeding (usually from the gastrointestinal tract or injuries)
Other complications can occur, depending on the disorder.
When to Contact a Medical Professional
Call your health care provider if you notice any unusual or severe bleeding.
Prevention depends on the specific disorder.
Ragni MV. Hemorrhagic disorders: Coagulation factor deficiencies. In: Goldman L, Schafer AI, eds. Goldman's Cecil Medicine. 24th ed. Philadelphia, PA: Saunders Elsevier; 2011:chap 177.
Gailani D, Neff AT. Rare coagulation deficiencies. In: Hoffman R, Benz EJ Jr, Silberstein LE, Heslop HE, Weitz JI, eds. Hematology: Basic Principles and Practice. 6th ed. Philadelphia, PA: Saunders Elsevier; 2012:chap 139.
Reviewed By: Yi-Bin Chen, MD, Leukemia/Bone Marrow Transplant Program, Massachusetts General Hospital. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, Bethanne Black, Stephanie Slon, and Nissi Wang.