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Haemophilia
Human genetic disease that impairs the body's ability to make blood clots, a process needed to stop bleeding / From Wikipedia, the free encyclopedia
Haemophilia is a blood condition that means bleeding does not stop.[1] It is a rare condition that affects the blood's ability to clot. It's usually inherited. Most people who have it are male.[1] A person with haemophilia is called a haemophiliac.
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People with hemophilia lack proteins in the blood that make scabs and blood clots.[1][2] For example, a child with haemophilia A does not enough clotting factor VIII (8) in their blood. A child with haemophilia B does not have enough clotting factor IX (9) in their blood.[1] People with hemophilia do not bleed more than a normal person, but they bleed for much longer.
In some cases, a boy is born with haemophilia even though there's no family history of the condition. In such cases, it's thought the gene change developed spontaneously in the boy's mother, grandmother or great-grandmother, but until then, a male member of the family had never inherited it.[1]
Some studies have shown there's no known family history of haemophilia in up to 1 in 3 new cases.[1]
The word comes from the Greek words haima ("blood") and philia ("to love").[3]