Diseases & conditions A-Z List
Diseases & Conditions A-Z List - «F»:
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Factor VII assay
The factor VII assay is a blood test to measure the activity of factor VII -- one of the substances needed for blood clotting (coagulation).
How the Test is Performed
Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The area is cleaned with germ-ki...
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Factor VII deficiency
Factor VII deficiency is an inherited disorder in which a lack (deficiency) of plasma protein factor VII leads to abnormal bleeding.
Causes
This disorder occurs when the body does not have enough factor VII, an important blood clotting protein.
When you bleed, the body launches a series of reaction...
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Factor VIII assay
The factor VIII assay is a blood test that measures the activity of factor VIII -- one of the substances involved in blood clotting (coagulation).
How the Test is Performed
Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The area is cleaned with g...
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Factor X assay
The factor X assay is a blood test to measure the activity of factor X -- one of the substances involved in blood clotting (coagulation).
How the Test is Performed
Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The area is cleaned with germ-killi...
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Factor X deficiency
Factor X deficiency is a disorder caused by too little of a protein called factor X in the blood. It leads to problems with blood clotting (coagulation).
Causes
When you bleed, the body launches a series of reactions that help the blood clot. This is called the coagulation cascade. The process invo...
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Factor XII (Hageman factor) deficiency
Factor XII deficiency is an inherited disorder that affects a protein (factor XII) involved in blood clotting.
Causes
When you bleed, the body launches a series of reactions that help the blood clot. This is called the coagulation cascade. The process involves special proteins called coagulation fa...
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Factor XII assay
The factor XII assay is a blood test to measure the activity of factor XII -- one of the substances involved in blood clotting.
How the Test is Performed
Blood is typically drawn from a vein, usually from the inside of the elbow or the back of the hand. The area is cleaned with germ-killing medicin...
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Failure to thrive
Failure to thrive is a description applied to children whose current weight or rate of weight gain is significantly below that of other children of similar age and sex.
Causes
Infants or children that fail to thrive seem to be dramatically smaller or shorter than other children the same age. Teenag...
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Fainting
Fainting is a temporary loss of consciousness due to a drop in blood flow to the brain. The episode is brief (lasting less than a couple of minutes) and is followed by rapid and complete recovery. You may feel light-headed or dizzy before fainting.
A longer, deeper state of unconsciousness is often ...
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Familial combined hyperlipidemia
Familial combined hyperlipidemia is a disorder of high cholesterol and high blood triglycerides that is inherited, which means it is passed down through families.
Causes
Familial combined hyperlipidemia is the most common genetic disorder of increased blood fats that causes early heart attacks. How...
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Familial dysbetalipoproteinemia
Familial dysbetalipoproteinemia is a disorder passed down through families in which there are high amounts of cholesterol and triglycerides in the blood.
Causes
A genetic defect causes this condition. The defect results in the buildup of large lipoprotein particles that contain both cholesterol and...
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Familial hypercholesterolemia
Familial hypercholesterolemia is a disorder of high LDL ("bad") cholesterol that is passed down through families, which means it is inherited. The condition begins at birth and can cause heart attacks at an early age.
See also:
Familial combined hyperlipidemia
Familial hypertriglyceridemia
Fam...
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Familial hypertriglyceridemia
Familial hypertriglyceridemia is a common disorder passed down through families in which the level of triglycerides (a type of fat) in a person's blood are higher than normal.
The condition is not associated with a significant increase in cholesterol levels.
Causes
Familial hypertriglyceridemia is ...
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Familial lipoprotein lipase deficiency
Familial lipoprotein lipase deficiency is a group of rare genetic disorders in which a person lacks a protein needed to break down fat molecules. The disorder causes large amounts of fat to build up in the blood.
Causes
Familial lipoprotein lipase deficiency is usually caused by a defective gene th...
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Familial Mediterranean fever
Familial Mediterranean fever is a disorder passed down through families (inherited), which involves repeated fevers and inflammation that often affects the abdomen or lungs.
Causes
Familial Mediterranean fever is caused by a mutation in the MEFV gene. The condition usually affects people of Mediter...