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Living with Prothrombin deficiency

A bleeding disorder in which blood clots slowly, causing long bleeding after injuries, surgery, or dental work.

Understanding Prothrombin deficiency

Prothrombin deficiency is a bleeding disorder that slows the blood clotting process.

People often bleed for a long time after an injury, surgery, or a tooth being pulled. In severe cases, heavy bleeding can happen after minor injuries or even with no injury. Women may have long or heavy periods. Milder forms may not involve spontaneous bleeding and may only be noticed after surgery or a serious injury.

Signs & symptoms

GARD doesn't list specific symptoms for this condition yet. The summary describes these features:

  • Long bleeding after injury, surgery, or dental work
  • Heavy bleeding after minor injuries in severe cases
  • Bleeding with no clear cause in severe cases
  • Long or heavy periods
  • Bleeding into joints, muscles, or organs

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

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

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

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
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 rare disease patient organizations for support
  • 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
How severe is my prothrombin deficiency?
What should I tell doctors or dentists before surgery or procedures?
Should my family members be tested?

Quick facts

GARD doesn't describe a cause for this condition yet.

Also known as: hypoprothrombinemias

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Prothrombin deficiencyGARD ID 25386 · 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 Prothrombin deficiency.

Explore the Prothrombin deficiency blog

Explore research for Prothrombin deficiency

Explore actively recruiting Prothrombin deficiency studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Prothrombin deficiency 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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I can help you find recruiting Prothrombin deficiency studies. Enter a ZIP code, address or city below and I'll look within 50 miles.

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

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