Diseases & conditions A-Z List
Diseases & Conditions A-Z List - «F»:
Fluorescein eye stain
This is a test that uses orange dye (fluorescein) and a blue light to detect foreign bodies in the eye. This test can also detect damage to the cornea, the outer surface of the eye.
How the Test is Performed
A piece of blotting paper containing the dye will be touched to the surface of your eye. Yo...
Fluoride in diet
Fluoride occurs naturally in the body as calcium fluoride. Calcium fluoride is mostly found in the bones and teeth.
Small amounts of fluoride help reduce tooth decay. Fluoridation of tap water helps reduce cavities in children by 50 - 60%. Fluorides also help maintain bone structure. Low d...
Flushable reagent stool blood test
Flushable reagent stool blood test is an at-home test to detect hidden blood in the stool.
How the Test is Performed
This test is performed at home with disposable pads. The pads are available at pharmacies without a prescription. Brand names include EZ-Detect and ColoCARE.
There is no direct handl...
Focal neurological deficits
A focal neurologic deficit is a problem in nerve, spinal cord, or brain function that affects a specific location, such as the left face, right arm, or even a small area such as the tongue.
It also refers to any problem with a specific nervous system function such as memory or emotion.
The type, loc...
Focal segmental glomerulosclerosis
Focal segmental glomerulosclerosis is scar tissue that forms in parts of the kidney called glomeruli. The glomeruli serve as filters, helping rid the body of unnecessary or harmful substances. Each kidney has thousands of glomeruli. One glomeruli is called a glomerulus.
"Focal" means that some of th...
Folate deficiency means you have a lower-than-normal amount of folic acid, a type of B vitamin, in your blood.
See also: Folic acid
Folic acid works along with vitamin B12 and vitamin C to help the body break down, use, and create new proteins. The vitamin helps form red blood cells and pro...
Folate-deficiency anemia is a decrease in red blood cells (anemia) due to a lack of folate.
Anemia is a condition in which the body does not have enough healthy red blood cells. Red blood cells provide oxygen to body tissues.
Folate, also called folic acid, is necessary for red blood cell f...
Folic acid and birth defect prevention
Does folic acid use help prevent birth defects?
There is good evidence that you can reduce the risk of certain birth defects (spina bifida , anencephaly, and some heart defects) by taking a daily dose of 400 micrograms folic acid before conception through the first trimester of pre...
Folic acid in diet
Folic acid is a type of B vitamin. It is water-soluble. Water-soluble vitamins dissolve in water. Leftover amounts of the vitamin leave the body through the urine. That means you need a continuous supply of the vitamin in your diet.
Folic acid works along with vitamin B12 and vitamin C to ...
Fontanelles - bulging
A bulging fontanelle is an outward curving of an infant's soft spot (fontanelle).
See also: Fontanelles - sunken
The skull is made up of many bones, 7 in the skull itself and 14 in the facial area. They join together to form a solid, bony cavity that protects the brain and supports ...
Fontanelles - excessively large
Excessively large fontanelles are larger than expected soft spots for the age of a baby. In an infant, the spaces where the bones of the skull come together, but are not completely joined, are called soft spots or fontanelle (fontanel or fonticulus).
Fontanelles allows for growth of ...
Fontanelles - sunken
Sunken fontanelles are an obvious curving in of the "soft spot" in an infant's head.
See also: Fontanelles - bulging
The skull is made up of many bones. There are 7 bones in the skull itself and 14 bones in the facial area. They join together to form a solid, bony cavity that protec...
Food additives are substances that become part of a food product when added (intentionally or unintentionally) during the processing or production of that food.
Common food additives include:
Monosodium glutamate (MSG)
Artificial sweeteners such as aspartame, saccharine, and sodium cyclamate
A food allergy is an exaggerated immune response triggered by eggs, peanuts, milk, or some other specific food.
Normally, your body's immune system defends against potentially harmful substances, such as bacteria, viruses, and toxins. In some people, an immune response is triggered by a subs...
Food guide pyramid
The food guide pyramid is designed to help people make healthy food choices.
In response to rising obesity rates, the United States Department of Agriculture introduced on April 19, 2005 a revised food guide pyramid called "MyPyramid." The new guide, which replaces the pyramid introduce...