發熱简体发热

fā rè

Fever · fa re

Also rendered: Fever (Clinical) · Heat issuing (Literal)

Reviewed · 2026-10-28

At a glance

Pinyin: fā rè
Simplified: 发热
Literal: 發 fā is to issue or send forth; 熱 rè is heat. The body puts heat out — not heat that is merely present, but heat that comes to the surface. The book uses it for the patient's own sensation of burning, and it may be there or not in cold damage; what may not be absent is the aversion to cold beside it.
Shuowen: **《說文》：「發，射發也。」「熱，温也。」** **底本三十五見**，分佈卷十二、卷二四、卷四八、卷五十一。**發熱在傷寒初起不必有**：5-03 曰「或已發熱，或未發熱，必惡寒」，明發熱可緩而惡寒不可無。**發熱與惡寒之先後，即陰陽之別**：5-08 以發熱惡寒為發於陽，無熱惡寒為發於陰。**温病之發熱則不惡寒而渴**（5-06），此又與傷寒分道。**「熱」字底本從火從埶，不作「热」**，条目字形依底本。

In brief

Heat issuing from the body. The book’s point is not that fever is present but when: in cold damage it may have begun or not, and the aversion to cold is what cannot be missing. Where fever stands with aversion to cold the illness is of the yang; where there is no fever at all the illness is of the yin; and where fever comes with thirst and no aversion to cold it is warm disease, a different road altogether.

Senses in the classical corpus

May be there, may not 或已發熱，或未發熱

傷寒初起，發熱有無不定，所必具者惡寒與脉緊

At the start of cold damage fever may have appeared or not; what must be there is aversion to cold, pain in the body, retching, and a tight pulse in both positions.

太陽病，或已發熱，或未發熱，必惡寒，體痛嘔逆，脉陰陽俱緊者，名曰傷寒 — 傷寒論·辨太陽病脉證并治上第五

Fever and the side it comes from 發熱惡寒者，發於陽也

有熱者邪在陽經，無熱者邪在陰經

Fever with aversion to cold comes from the yang; aversion to cold without fever comes from the yin.

病有發熱惡寒者，發於陽也；無熱惡寒者，發於陰也 — 傷寒論·辨太陽病脉證并治上第五

Fever that is warm disease 發熱而渴，不惡寒者，爲温病

發熱而渴、不惡寒，與傷寒之惡寒者正相反，故别為温病

Fever with thirst and no aversion to cold is warm disease: exactly the reverse of cold damage, and therefore a different name.

太陽病，發熱而渴，不惡寒者，爲温病 — 傷寒論·辨太陽病脉證并治上第五

Heat from the yin stirring 陰動則發熱

陰陽相搏而動，陽動則汗出，陰動則發熱；此發熱生於内，非外邪所致

When yin stirs there is fever, as when yang stirs there is sweat: this heat is generated within, not brought by an outside evil.

陽動則汗出，陰動則發熱 — 傷寒論·辨脉法第一

Occurrences in the classics

Passages where the term does real work, with the original, pinyin and English on the same line.

Display

4 passages

傷寒論·辨太陽病脉證并治上第五 Read in context →

太陽病，或已發熱，或未發熱，必惡寒，體痛嘔逆，脉陰陽俱緊者，名曰傷寒。太阳病，或已发热，或未发热，必恶寒，体痛呕逆，脉阴阳俱紧者，名曰伤寒。

tài yáng bìng huò yǐ fā rè huò wèi fā rè bì wù hán tǐ tòng ǒu nì mài yīn yáng jù jǐn zhě míng yuē shāng hán

In taiyang disease, whether fever has appeared or not, there is certain aversion to cold, bodily pain, vomiting with counterflow, and both the yin and yang pulses are tight: this is called cold damage.

**「發熱」五篇共35見**（經文，不含成注），本文引第5篇第03段、第5篇第08段、第5篇第06段、第1篇第14段。

傷寒論·辨太陽病脉證并治上第五 Read in context →

病有發熱惡寒者，發於陽也；無熱惡寒者，發於陰也。發於陽者七日愈，發於陰者六日愈，以陽數七、陰數六故也。病有发热恶寒者，发于阳也；无热恶寒者，发于阴也。发于阳者七日愈，发于阴者六日愈，以阳数七、阴数六故也。

bìng yǒu fā rè wù hán zhě fā yú yáng yě wú rè wù hán zhě fā yú yīn yě fā yú yáng zhě qī rì yù fā yú yīn zhě liù rì yù yǐ yáng shù qī yīn shù liù gù yě

Illness with fever and aversion to cold arises from yang; illness with aversion to cold but no fever arises from yin. Yang cases heal in seven days, yin cases in six, because the yang number is seven and the yin number six.

發熱之在傷寒，有不必有；其必具者惡寒。發熱而渴不惡寒，則温病而非傷寒矣。

傷寒論·辨太陽病脉證并治上第五 Read in context →

太陽病，發熱而渴，不惡寒者，爲温病。太阳病，发热而渴，不恶寒者，为温病。

tài yáng bìng fā rè ér kě bù wù hán zhě wéi wēn bìng

In taiyang disease, fever with thirst and no aversion to cold is warm disease.

發熱之在傷寒，有不必有；其必具者惡寒。發熱而渴不惡寒，則温病而非傷寒矣。

傷寒論·辨脉法第一 Read in context →

陰陽相搏，名曰動。陽動則汗出，陰動則發熱，形冷惡寒者，此三焦傷也。阴阳相搏，名曰动。阳动则汗出，阴动则发热，形冷恶寒者，此三焦伤也。

yīn yáng xiāng bó míng yuē dòng yáng dòng zé hàn chū yīn dòng zé fā rè xíng lěng wù hán zhě cǐ sān jiāo shāng yě

When yin and yang strike against each other it is called a moving pulse. Yang moving gives sweating, yin moving gives fever; if the body is cold and averse to cold, the triple burner is injured.

發熱之在傷寒，有不必有；其必具者惡寒。發熱而渴不惡寒，則温病而非傷寒矣。

Compounds built on this term

發熱惡寒

fā rè wù hán

fever with aversion to cold

辨太陽病脉證并治上第五

翕翕發熱

xī xī fā rè

a gathering, glowing fever

辨太陽病脉證并治上第五

身灼熱

shēn zhuó rè

the body burns

辨太陽病脉證并治上第五

How it has been translated

Every rendering below is a decision about which reader is being addressed. There is no neutral option.

This site	fever	keeps the issuing, and reads it with the aversion beside it
Literal	sending forth heat	exact, and not how a patient speaks
Clinical	raised body temperature	clear, and blind to the pattern

Entry status

Review pending — who reviews this?

2026-10-28

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