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Definition:

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.

See also:



Alternative Names:

Coagulopathy



Causes, incidence, and risk factors:

Normal blood clotting involves as many as 20 different plasma proteins, which are known as blood clotting or coagulation factors. These factors act together 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 having poorly working or too few of the blood cells that promote blood clotting (platelets). These disorders can also be either inherited or picked up (acquired). The side effects of certain drugs often lead to the acquired forms.



Symptoms:
  • Abnormal menstrual bleeding
  • Bleeding into joints
  • Excessive bruising
  • Heavy bleeding
  • Nosebleeds

Which problems occur depends on the specific bleeding disorder.



Signs and tests:

Treatment:

Treatment depends on the type of disorder. It may include:

  • Factor replacement
  • Fresh frozen plasma transfusion
  • Platelet transfusion
  • Other therapies


Support Groups:



Expectations (prognosis):

The outcome also depends on the disorder. Most primary bleeding disorders can be managed. Those due to diseases, such as DIC, depend on how well the disease is treated.



Complications:
  • Bleeding in the brain
  • Severe bleeding (usually from the gastrointestinal tract or injuries)

Other complications can occur, depending on the disorder.



Calling your health care provider:

Call your health care provider if you notice any unusual or severe bleeding.



Prevention:

Prevention depends on the specific disorder.



References:

Kessler C. Hemorrhagic disorders: Coagulation factor deficiencies. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier;2007:chap 180.




Review Date: 3/2/2009
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and Yi-Bin Chen, MD, Leukemia/Bone Marrow Transplant Program, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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