Webster's New World Medical Dictionary

FAO deficiency
See 
Sjogren’s syndrome.
FAP
Familial adenomatous polyposis.
Farber lipogranulomatosis
A very rare, deadly
genetic disease that is characterized by the onset, in
the first few weeks of life, of swollen, painful joints;
nodules under the skin; profound motor and devel-
opmental delay; cherry-red spots in the retina; and
cardiorespiratory problems. The disease is inher-
ited as an autosomal recessive trait and is due to a
deficiency of the enzyme acid ceramidase. Farber
lipogranulomatosis is one of the sphingolipidoses, a
group of genetic diseases that involve overproduc-
tion or accumulation of fatty substances called
sphingolipids in the brain and nervous system. See
also 
sphingolipidosis.
farsightedness
An error of refraction in the
human eye that causes light rays to focus behind the
retina instead of on it. A person who is farsighted
has normal vision at a distance but has trouble
focusing on nearby objects. Farsightedness can be
corrected with refractive lenses—either glasses or
contact lenses—and in some cases by surgery. Also
known as hyperopia.
fart
See 
flatulence.
FAS
Fetal alcohol syndrome.
fascia
A flat band of tissue below the skin that
covers underlying tissues and separates different
layers of tissue. Fascia also encloses muscles.
fasciculation
Involuntary contractions or twitch-
ings of groups of muscle fibers. Fasciculations can
occur in normal individuals without an associated
disease or condition, or as a result of illness, such
as muscle cramps, nerve diseases, and metabolic
imbalances.
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fasciculation
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