Hemophilia A Symptoms

The symptoms of hemophilia A depend on the severity of the condition. The most common are excessive bleeding and easy bruising.

If you have mild hemophilia A, you may only experience symptoms in certain instances, such as following a dental procedure, accident, or surgery.

If you know that you have hemophilia A, it is important to let your dentist and other healthcare professionals know about your condition so they can take necessary precautions.

Symptoms of hemophilia A include1:

  • Bleeding into joints with associated pain and swelling
  • Blood in urine or stool (bowel movements)
  • Bruising
  • Gastrointestinal tract and urinary tract hemorrhage
  • Nosebleeds
  • Prolonged bleeding from cuts, tooth extraction, and surgery

People with moderate to severe hemophilia A can also experience occasional bleeding episodes without obvious cause. These are called spontaneous bleeding episodes. These episodes can cause bleeding into the joints and muscles.1

For parents: Noticing signs in your child

At first, parents of a child with hemophilia A are unlikely to notice symptoms in their baby, especially if they are unaware of any family history of hemophilia. Often, the first indication of a bleeding disorder occurs when a male child is circumcised.2 Otherwise, signs of hemophilia A usually are not noticeable until the child is a toddler, when injuries are more common.

Signs that your toddler might have hemophilia3:

  • Nosebleeds that are difficult to stop
  • Raised bruises on the stomach, chest, buttocks, and back
  • Bleeding in the mouth after a child bites on his or her lips or tongue

The most common types of bleeds—though not the most obvious—are muscle or joint bleeds. These bleeds are difficult to identify, but a sign can be a child’s unwillingness to move a particular body part because of pain or swelling.3

For more information:

Caring for Children


  1. Hemophilia A. PubMed Health website. http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001565. Updated February 24, 2014. Accessed October 22, 2014.
  2. What are the signs and symptoms of hemophilia? National Institutes of Health; National Heart, Lung, and Blood Institute website. http://www.nhlbi.nih.gov/health/health-topics/topics/hemophilia/signs.html. Updated July 31, 2013. Accessed October 22, 2014.
  3. Hemophilia. KidsHealth.org website. http://www.kidshealth.org/parent/medical/heart/hemophilia.html. Accessed December 17, 2014.