Webster's New World Medical Dictionary

SARS
See 
severe acute respiratory syndrome.
sartorius muscle
The long band of muscle that
stretches from the calf to the pelvis. It moves the
thigh and, by extension, the leg.
saturated fat
A fat that contains only saturated
fatty acids, is solid at room temperature, and comes
chiefly from animal food products. Some examples
of saturated fat are butter, lard, meat fat, solid short-
ening, palm oil, and coconut oil. Saturated fat tends
to raise the level of cholesterol in the blood.
sawbones
Slang for a physician, especially a sur-
geon, and in particular an orthopedic surgeon.
scabicide
A medication that is used to treat sca-
bies. Examples include permethrin cream, lindane,
or crotamiton lotion and cream. Sulfur in petrola-
tum (10 percent) is one of few effective scabicidal
treatments that may be used safely without fear of
toxicity in very small children and in pregnant
women. See also 
scabies; scabies, keratotic.
scabies
Infestation of the skin by the human itch
mite Sarcoptes scabei. The initial symptom of sca-
bies are red, raised bumps that are intensely itchy. A
magnifying glass reveals short, wavy lines of red
skin, which are the burrows made by the mites.
Treatment involves use of several scabicide medica-
tions. See also 
scabicide.
scabies, keratotic
A severe form of scabies that
is caused by delaying treatment of the initial infesta-
tion. Keratotic scabies is characterized by mite-filled
lesions covered with scabs. These lesions often
become infected with bacteria such as staphylococ-
cus. Keratotic scabies is most common in people
with immune-system problems, including AIDS, dia-
betes, and lupus. Also known as crusted scabies.
scalded skin syndrome
See 
staphylococcal
scalded skin syndrome.