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Living with Congenital afibrinogenemia

A rare inherited bleeding disorder where the blood does not clot well, with bleeding often starting in the newborn period.

Understanding Congenital afibrinogenemia

Congenital afibrinogenemia is a bleeding disorder caused by impairment of the blood clotting process.

People bleed more than expected. Newborns often bleed for a long time from the umbilical cord stump. Nosebleeds and bleeding from the gums or tongue are common, with or without an injury. Some have bleeding into joints or muscles. Women can have heavy periods and may have trouble carrying a pregnancy to term without proper treatment.

Signs & symptoms

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

  • Bleeding tendency
  • Nosebleeds
  • Bleeding gums
  • Joint swelling from bleeding
  • Heavy or long periods
  • Long bleeding from the umbilical cord stump in newborns

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
  • 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
What treatment can prevent or stop bleeding?
How should we plan for surgery, dental work or pregnancy?
Should family members be tested?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive

GARD says changes in genes cause this condition. It is autosomal recessive, so a child inherits a changed copy of the gene from each parent.

GeneticBlood

Also known as: congenital hypofibrinogenemia; familial afibrinogenemia; fibrinogen deficiency

Patient organizations

Source: NIH GARD · Congenital afibrinogenemiaGARD ID 5761 · 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 Congenital afibrinogenemia.

Explore the Congenital afibrinogenemia blog

Explore research for Congenital afibrinogenemia

Explore actively recruiting Congenital afibrinogenemia studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Congenital afibrinogenemia with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • 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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