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Living with Familial dysfibrinogenemia

A clotting condition in which an abnormal fibrinogen protein can cause bleeding, clotting, or no symptoms.

Understanding Familial dysfibrinogenemia

Familial dysfibrinogenemia is a clotting disorder in which the body makes an abnormal form of fibrinogen, a protein that helps blood clot.

The abnormal fibrinogen causes faulty clots and can raise or lower the ability to clot. Of people with the inherited form, about 40% have no symptoms, about 50% have a bleeding problem, and about 10% have excess clotting or both. It can appear at any time in life.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Easy bleeding
  • Nosebleeds
  • Bleeding gums
  • Bleeding in the digestive tract
  • Blood clots in veins
  • Sometimes no symptoms

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include blood and bone marrow specialists and genetic specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Blood and bone marrow specialists (hematologists); Genetic specialists (geneticists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with National Bleeding Disorders Foundation and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Am I more likely to bleed or to clot with my gene change?
How should I prepare for surgery or dental work?
Should other family members be tested?

Quick facts

Symptoms usually startany time in life
InheritanceAutosomal Dominant

Changes in the FGA, FGB, or FGG genes cause the inherited form. It is most often autosomal dominant or codominant, but can be autosomal recessive.

GeneticBlood

Also known as: congenital dysfibrinogenemia; dysfibrinogenemia; dysfibrinogenemia, congenital; hereditary dysfibrinogenemia; hypodysfibrinogenemia

Patient organizations

Source: NIH GARD · Familial dysfibrinogenemiaGARD ID 2004 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Familial dysfibrinogenemia.

Explore the Familial dysfibrinogenemia blog

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  • Recruiting studies from ClinicalTrials.gov
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  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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