swelling, or enlargement, of the tongue. A swollen tongue can be a symptom of glossitis, an inflammation of the tongue that can be caused by infections, local irritation or burns, and allergic reactions. Swelling of the tongue can also result from trauma or rare diseases, such as amyloidosis.
- Sydenham chorea
one form that just involves one side of the body (hemichorea), another form that involves muscular rigidity (termed paralytic chorea), etc. Sydenham chorea is also known as acute chorea, chorea minor, juvenile chorea, rheumatic chorea and postrheumatic chorea. The word “chorea” refers to ceaseless rapid complex body movements that look well coordinated and purposeful but […]
- Sydenham, Thomas
(1624-1689) Great English physician who has been called the “English Hippocrates” and the “father of English medicine.” Sydenham left Oxford to fight in the English Civil Wars during which he met Thomas Coxe, a physician serving in the army, who inspired him to enter medicine. At the age of 38 he was licensed by the […]
- Sylvatic plague
A type of plague that is spread by ground squirrels and other wild rodents. Sylvatic plague is sometimes seen in the western portion of the US.
- Sylvius, aqueduct of
A canal between the third and fourth ventricles in the brain within the system of four communicating cavities that are continuous with the central canal of the spinal cord. The ventricles are filled with cerebrospinal fluid, which is carried by the aqueduct of Sylvius.
- Symbol of medicine
A staff or a rod with a snake curled around it; the staff of Aesculapius, also called Asklepios, the ancient mythical god of medicine. For more information, see; Medical symbol.