A Chinese herb (also called qinghaosu) from which is extracted the antimalarial agent artemisinin.
- Swimmer's ear
Infection of the skin covering the outer ear canal that leads in to the ear drum, usually due to bacteria such as streptococcus, staphylococcus, or pseudomonas. Fungal infections may also occur. Swimmer’s ear is usually caused by excessive water exposure. When water pools in the ear canal (frequently trapped by wax), the skin will become […]
- Swimming pool granuloma
Localized nodular skin inflammation (small reddish raised areas of skin) caused by a bacterium called mycobacterium marinum. Swimming pool granuloma is typically acquired by occupational or recreational exposure to salt or fresh water, often resulting from minor trauma during caring for aquariums. The diagnosis is suggested by the history of exposure and confirmed by culturing […]
- Swine flu
A respiratory illness of pigs caused by infection with swine influenza A virus (SIV). While swine flu viruses normally do not infect humans, occasional infections of humans do occur. Human cases of swine influenza A virus infection occur in individuals who have had a history of recent direct contact with pigs or close (within 6 […]
- Swollen tongue
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 […]