What Is Hemophilia ? Hemophilia is a rare blood clotting disorder that stops blood from clotting properly. It occurs when the body produces insufficient amounts of a protein known as the clotting factor. After a cut or accident, clotting helps to halt the bleeding. Someone can bleed freely or for longer than usual if coagulation does not occur. Small cuts are usually not … [Read more...] about Hemophilia: How Does It Affect Your Child?