Category: F
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Foil
A thin, pliable sheet of metal. In dentistry, various types of gold foil are used for restoring teeth.
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Fogo selvagem
An autoimmune disease that causes blistering of the skin of the head, neck or trunk, esp. when the skin is rubbed (Nikolsky’s sign). It often causes a burning dysesthesia, from which its popular name is derived. The disease is typically found in Brazil or Colombia and has been associated with chronic or recurrent exposure to…
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Fogging effect
Transient difficulty in visualizing an ischemic stroke with computed tomography (CT) or magnetic resonance (MR) imaging, typically occurring about 10 days after the stroke.
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Fogging
A method of testing vision, used particularly in testing myopia and in postcycloplegic examination, in which accommodation is relaxed by overcorrection.
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Fog
Droplets suspended in a gas, as minute water droplets in air.
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Focal neuropathy
Any nerve disease or injury, e.g., carpal tunnel syndrome or peroneal nerve palsy, that affects a single nerve.
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Focal infection
Infection occurring near a focus, such as the cavity of a tooth.
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Focal disease
A disease located at a specific and distinct area such as the tonsils, adenoids, or a boil.
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Foam
A mixture of finely divided gas bubbles interspersed in a liquid. A light, airy, whipped styling product that resembles shaving foam and builds moderate body and volume into the hair.
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Flutter-fibrillation
Cardiac dysrhythmia alternating between atrial fibrillation and atrial flutter, or showing a pattern that is difficult to distinguish during routine cardiac monitoring.