Webster's New World Medical Dictionary

senile keratosis
See 
keratosis, actinic.
sensory
Relating to sensation, to the perception
of a stimulus, to the voyage made by incoming nerve
impulses from the sense organs to the nerve centers
or to the senses themselves.
sensory integration dysfunction
A neurologi-
cal disorder in which there is impaired perception
or processing of sensory input to the brain. In sen-
sory integration dysfunction, the processing of infor-
mation from a number of different senses may be
impaired, such as sight, hearing, touch, smell, taste,
the sense of movement (vestibular system), and/or
the positional sense (proprioception). Symptoms
range from very mild to debilitating and may involve
apparent over- or undersensitivity to sensory input. It
is most commonly diagnosed in children. Treatment
is a form of occupational therapy in which special
exercises are used, for example, to strengthen the
patient’s sense of touch (tactile), sense of balance
(vestibular), or sense of where the body and its parts
are situated in space (proprioceptive). Also known
as sensory processing disorder.
seizure, petit mal
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sentinel lymph node
See 
lymph node, sentinel.
sentinel lymph node biopsy
See 
biopsy, sen-
tinel lymph node. 
sepsis
The presence of bacteria (bacteremia),
other infectious organisms, or toxins created by
infectious organisms in the bloodstream with
spread throughout the body. Sepsis may be associ-
ated with clinical symptoms of systemic illness, such
as fever, chills, malaise, low blood pressure, and
mental-status changes. Sepsis can be a serious situ-
ation, a life-threatening condition that requires
urgent and comprehensive care. Treatment depends
on the type of infection but usually begins with
antibiotics or similar medications. Also known as
blood poisoning and septicemia.