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yellow fever

(Encyclopedia)yellow fever, acute infectious disease endemic in tropical Africa and many areas of South and Central America. Yellow fever is caused by a virus transmitted by the bite of the female Aedes aegypti mos...

relapsing fever

(Encyclopedia)relapsing fever, infectious disease caused by a spirochete bacteria of the genus Borrelia and characterized by a high fever that breaks and then recurs a one to two weeks later. Relapsing fever may be...

rheumatic fever

(Encyclopedia)rheumatic fever ro͞omătˈĭk [key], systemic inflammatory disease, extremely variable in its manifestation, severity, duration, and aftereffects. It is frequently followed by serious heart disease, ...

rash

(Encyclopedia)rash, nonspecific term for an eruption of the skin. It may result from skin allergy, skin irritation, or skin disease, or it may be a symptom of a systemic disease like measles, smallpox, or scarlet f...

Sydenham, Thomas

(Encyclopedia)Sydenham, Thomas, 1624–89, English physician, called “the English Hippocrates.” He studied at Oxford and Montpellier, and practiced in London. His conceptions of the causes and treatments of epi...

Louis, titular duke of Burgundy

(Encyclopedia)Louis, 1682–1712, titular duke of Burgundy; grandson of King Louis XIV of France. He became heir to the throne on the death (1711) of his father, Louis the Great Dauphin. François de Fénelon was h...

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