Skip to main content


Medically reviewed by Last updated on Jul 7, 2024.

What is hemophilia?

Hemophilia is a disorder that causes you to bleed more or longer than normal. Clotting factors such as platelets and fibrinogen help your body form clots to stop bleeding. The clotting factors in your blood may not work correctly, or your body may not make enough.

What are the types and levels of hemophilia?

The 2 common types of hemophilia are hemophilia A and hemophilia B. Hemophilia A means the level of clotting factor VIII (8) is lower than normal. Hemophilia B means the level of clotting factor IX (9) is lower than normal. Hemophilia can be mild, moderate, or severe. This is based on the amount of clotting factor or the kind of bleeding episodes you have. A bleeding episode is bleeding that lasts longer than several minutes. Bleeding episodes can occur with or without injury.

What are the signs and symptoms of hemophilia?

How is hemophilia diagnosed?

Your healthcare provider will examine you and ask when and how bleeding occurs. Tell your provider if other family members have hemophilia or other bleeding problems. Hemophilia is usually inherited. This means a gene is passed from parent to child. Your risk for hemophilia is higher if you are male. If you are female, you may carry and pass the gene but not have hemophilia.

How is hemophilia treated?

Hemophilia cannot be cured. Treatment is based on the type you have and on your symptoms. Treatment is given to improve clotting and manage symptoms:

What can I do to manage bleeding episodes?

Call your healthcare provider right away if you are bleeding. You may need extra treatments with blood products.

What can I do to manage hemophilia?

Where can I find support and more information?

Call your local emergency number (911 in the US) if:

When should I seek immediate care?

When should I call my doctor or hematologist?

Care Agreement

You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your healthcare providers to decide what care you want to receive. You always have the right to refuse treatment. The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

© Copyright Merative 2024 Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes.

Learn more about Hemophilia

Treatment options

Care guides

Symptoms and treatments

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.