Disease or Syndrome
hemophilia
he·mo·phil·i·a [ hee-muh-fil-ee-uh, -feel-yuh, hem-uh- ]
Etymology:
Greek haima = blood + philia = liking
Also called:
Christmas disease; Factor IX deficiency; Factor VIII deficiency
Definitions related to hemophilia, nos:
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(hemophilia) A coagulation disorder characterized by the partial or complete absence of factor VIII or IX activity in the blood.NICHD Pediatric TerminologyU.S. National Cancer Institute, 2021
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(hemophilia) A deficiency or abnormality of a blood coagulation factor characterized by the tendency to hemorrhage. Hemophilia is typically a hereditary disorder but, rarely, may be acquired. Inherited coagulation factor-deficient hemophilias include hemophilia A or classic hemophilia (hereditary factor VIII deficiency) hemophilia B or Christmas disease (hereditary factor IX deficiency), and hemophilia C (hereditary factor XI deficiency). Factor VIII inhibitors may occur spontaneously as autoantibodies, resulting in acquired hemophilia known as acquired factor VIII deficiency. Approximately 10% of patients with acquired hemophilia have an underlying malignancy.NCI ThesaurusU.S. National Cancer Institute, 2021
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(hemophilia) Group of hereditary disorders in which affected individuals fail to make enough of certain proteins needed to form blood clots.NCI Dictionary of Cancer TermsU.S. National Cancer Institute, 2021
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(hemophilia) Hemophilia is a rare disorder in which the blood does not clot normally. It is usually inherited. Hemophilia usually occurs in males. If you have hemophilia, you have little or no clotting factor. Clotting factor is a protein needed for normal blood clotting. Without it, you may bleed for a long time after an injury or accident. You also may bleed into your knees, ankles, and elbows. Bleeding in the joints causes pain and, if not treated, can lead to arthritis. Bleeding in the brain, a very serious complication of hemophilia, requires emergency treatment. The main symptoms of hemophilia are excessive bleeding and easy bruising. Blood tests can tell if you have it. The main treatment is injecting the missing clotting factor into the bloodstream. You may need it on a regular basis, or just when bleeding occurs. NIH: National Heart, Lung, and Blood InstituteMedlinePlusU.S. National Library of Medicine, 2021
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Hemophilia is a bleeding disorder that slows the blood clotting process. People with this condition experience prolonged bleeding or oozing following an injury, surgery, or having a tooth pulled. In severe cases of hemophilia, continuous bleeding occurs after minor trauma or even in the absence of injury (spontaneous bleeding). Serious complications can result from bleeding into the joints, muscles, brain, or other internal organs. Milder forms of hemophilia do not necessarily involve spontaneous bleeding, and the condition may not become apparent until abnormal bleeding occurs following surgery or a serious injury. The major types of this condition are hemophilia A (also known as classic hemophilia or factor VIII deficiency) and hemophilia B (also known as Christmas disease or factor IX deficiency). Although the two types have very similar signs and symptoms, they are caused by mutations in different genes. People with an unusual form of hemophilia B, known as hemophilia B Leyden, experience episodes of excessive bleeding in childhood but have few bleeding problems after puberty.MedlinePlus GeneticsU.S. National Library of Medicine, 2021
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Hemophilias are common hereditary bleeding disorders caused by deficiencies of either clotting factor VIII or IX. The extent of factor deficiency determines the probability and severity of bleeding. Bleeding into deep tissues or joints usually develops within hours of trauma. The diagnosis is suspected in a patient with an elevated...Merck & Co., Inc., 2020
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Hemophilia is a rare disorder in which your blood doesn't clot normally because it lacks sufficient blood-clotting proteins (clotting factors). If you have hemophilia, you may bleed for a longer time after an injury than you would if your blood clotted normally.Mayo Foundation for Medical Education and Research
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Hemophilia is a bleeding disorder that slows the blood clotting process. People with this disorder experience prolonged bleeding following an injury, surgery, or having a tooth pulled. In severe cases, heavy bleeding occurs after minor trauma or in the absence of injury. Serious complications can result from bleeding into the joints,...National Center for Advancing Translational Sciences
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Hemophilia is a bleeding disorder, usually inherited with an X-linked recessive inheritance pattern, which results from the deficiency of a coagulation factor. Hemophilia A results from the deficiency of clotting factor VIII. Hemophilia B results from the deficiency of clotting factor IX. Acquired hemophilia is a separate noninherited...Athenahealth, Inc., 2019
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Hemophilia, hereditary bleeding disorder caused by a deficiency of a substance necessary for blood clotting (coagulation). In hemophilia A, the missing substance is factor VIII. The increased tendency to bleeding usually becomes noticeable early in life and may lead to severe anemia or even death....Encyclopedia Britannica, Inc., 2020
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