虽然现代诊断技术在不断发展,但是不明原因的发热仍常可遇见,处理很感棘手。Becson等于1961年规定了不明原因发热之条件:病程超过3星期;体温高于38.3℃;住院研究1周后不能确诊。不少学者认为感染是主要的原因但,均未注意到牙齿感染的重要性。 Although modern diagnostic techniques are evolving, unexplained fever can often be encountered and the treatment is very troublesome. Becson is equal to 1961 provides for the conditions of unexplained fever: the duration of more than 3 weeks; body temperature above 38.3 ℃; hospitalization can not be confirmed after 1 week. Many scholars believe that infection is the main reason, but did not notice the importance of dental infections.