Hemophilia is a type of bleeding disorder that affects how your blood clots. It may cause you to bleed too much after an injury. The bleeding can be inside your body, or it may be from a wound visible on your skin. Sometimes internal bleeding happens without a clear injury.
The normal way your body stops bleeding is to plug the injured site with platelet cells. Platelets mix with clotting factors (proteins) in the blood. This makes a strong clot. People with hemophilia don't have enough clotting factors. Their blood clots may not be strong enough to stop bleeding. Hemophilia can range from mild to severe. It depends on how much clotting factor is missing.
Bleeding inside the body often occurs at joints. The joints where it's most likely to happen are:
- Knees
- Elbows
- Ankles
- Shoulders
- Wrists
Bleeding into a joint that keeps happening can cause lasting damage. Make sure you know the symptoms of joint bleeding, such as joint pain, warmth, and swelling.
Bleeding can also occur in other parts of your body. You may have it in places like the bowel, bladder, or a muscle. These may cause symptoms, such as blood in the urine or bowel movements, black tarry stools, blood in vomit, or vomit that looks like coffee grounds, muscle pains or spasms, and tingling or bubbling feeling. In severe cases, bleeding may occur in the brain. This can be life-threatening and cause symptoms, such as severe headache, vomiting, double vision, and difficulty staying awake. Get care right away if you or your child has any symptoms of bleeding.