Definition
From the Latin word febris, meaning fever, an acute febrile illness is a type of illness characterized by a sudden onset of fever, which is an increase in internal body temperature to levels above normal.
Supplement
Word origin: acute » Latin acūtus, sharpened; febrile » Late Latin febrīlis, from Latin febris, fever; illness » ill: Middle English, from Old Norse īllr, bad + –ness.
See also: human ehrlichiosis, sao paulo fever, spotted fever, tick fever.
Dictionary > Acute febrile illness