Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «S»:
SAMHSA: The Substance Abuse and Mental Health Services Administration, a part of the U.S. Public Health Service, that works to improve the quality and availability of substance abuse prevention, addiction treatment, and mental health services. Provides funding through block grants to states for dire...
Sample, random: A group selected randomly, solely by chance....
San Joaquin Valley disease
San Joaquin Valley disease: A disease also called coccidioidomycosis (CM) due to a fungus called Coccidioides immitis. About 40% of people infected with this fungus develop symptoms. Most often they have an influenza-like illness with fever, cough, headaches, rash, and myalgias (muscle pains). Of th...
Sand, biliary: Biliary sand is a term mostly used by
surgeons when they remove the gallbladder to describe uncountable,
small particles in bile that are visible to the naked eye. Biliary
sand may be looked upon as a stage in the growth of the particles
that comprise sludge (which are microscopi...
Sand-blind: Partly blind, semi-blind, half-blind. From the Old English samblind from sam- meaning semi- + blind. In the erroneous belief that the term referred to blindness caused by sand, Samuel Johnson defined the term in his great Dictionary of the English Language (1755) as: "Having a defect in ...
Sandfly fever: An acute mild viral disease characterized by fever, malaise, eye pain, and headache occurring mainly during the warm weather in many parts of the world. It is caused by Phleboviruses and is transmitted by sandflies. Sandfly fever is also known as pappataci fever, phlebotomus fever, an...
Sandhoff disease: A genetic disorder with symptoms that are very similar to those of Tay-Sachs disease (TSD) and that is characterized by accumulation of fatty material called GM2 ganglioside in the nerve cells of the brain. Symptoms begin around 6 months of age, with motor weakness, and progress to...
Sanfilippo syndrome: The most common disorder of mucopolysaccharide metabolism, a syndrome in which the onset of clinical abnormalities is between the ages of 2 and 6 with mild coarsening of the facial features (but normal clear corneas), mild stiffening of the joints, slowing of growth, and intell...
Sanger Centre: A celebrated genetics research center in the UK where much of the human genome sequencing took place.
The Sanger Centre was established jointly by the Wellcome Trust and the British Medical Research Council to provide a major focus in the UK for mapping and sequencing the human genom...
Sanguine: 1) Having a ruddy (reddish) complexion. 2)
Cheerful, hopeful, confident, and optimistic; impulsive.
The word "sanguine" from the Latin "sanguineus" for "blood" has
long been used in English for things relating to the blood. A person
who is ruddy in complexion is sanguine. His (or her) ...
Saphenous vein: The saphenous veins -- there are two, the great and the small saphenous veins - serve as the principal veins running superficially (near the surface) up the leg.
The great saphenous vein (also called the large saphenous vein) goes from the foot all the way up to the saphenous open...
Saphenous vein, great
Saphenous vein, great: The larger of the two saphenous veins, the principal veins that run up the leg superficially (near the surface).
The great saphenous vein goes from the foot all the way up to the saphenous opening, an oval aperture in the broad fascia of the thigh, a fibrous membrane throug...
Saphenous vein, large
Saphenous vein, large: The larger of the two saphenous veins, the principal veins that run up the leg superficially (near the surface).
The large saphenous vein goes from the foot all the way up to the saphenous opening, an oval aperture in the broad fascia of the thigh, a fibrous membrane through w...
Saphenous vein, small
Saphenous vein, small: The smaller of the two saphenous veins, the principal veins that run up the leg superficially (near the surface).
The small saphenous vein, runs behind the outer malleolus (the protuberance on the outside of the ankle joint), comes up the back of the leg and joins the popli...
SAPHO syndrome: SAPHO syndrome is an eponym for a condition which is characterized by a combination of:
Synovitis -- inflammation of the joint lining (synovium), typically manifest as warmth, tenderness, pain, swelling, and stiffness of involved joints (arthritis).
Acne -- a familiar skin condition...