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Fever seizures (febrile seizures) are uncontrolled muscle spasms and unresponsiveness in a child. They usually last 1 to 3 minutes

A fungus is an organism that can grow on living and nonliving things. Fungi (the plural of fungus) include many types of organisms

Frostbite is freezing of the skin and tissues below the skin. It occurs when a person is exposed to freezing temperatures [ 32°F

Food poisoning is an illness caused by eating foods that have harmful germs in them, like bacteria, parasites, and viruses. These

Food intolerance refers to a physical response to a food or food additive that is not an allergic reaction. It differs from a food

Folate deficiency anemia is a blood problem that occurs when there is not enough of this vitamin in the body. Folate (or folic

Folliculitis is an inflammation of the pouches (follicles) in the skin where hair grows. You can have folliculitis on any part of

Floaters are shadows or dark objects that "float" across your field of vision. Floaters may appear as dark specks, strings, or

Fetal ultrasound uses reflected sound waves to provide an image of the fetus and placenta. Fetal ultrasound is the safest way to

Electronic fetal monitoring measures a baby's (fetus's) heart rate during pregnancy or labor and delivery. It also shows how long