Until the Sui Dynasty in China, night sweat and spontaneous perspiration had been thought to be caused by same pathophysiology, that is, lowered superficial resistance by deficiency of Qi.In the Tang Dynasty, these were considered to have different pathophysiologies and a new principle indicated that pathogenic heat caused night sweat.In the Song and Jing Dynasties, deficiency of blood and pathogenic heat by deficiency of Yin was also considered to cause night sweat.In the Jing Dynasty, exogenous pathogens, such as Cold were considered to cause night sweat, which indicated the principle that not only the deficiency syndrome but also the excess syndrome caused night sweat.In the beginning of the Yuan and Ming Dynasties, it was concluded that the deficiency of Yin caused night sweat and the deficiency of Yang caused spontaneous perspiration.In the middle of the Ming Dynasty, another new theory indicated that deficiency of Yang also possibly caused night sweat; therefore we should diagnose abnormal sweat depending on the pathophysiology in each case.In the Qing Dynasty, new theories were established stating that not only exogenous pathogens but also Damp-heat, undigested food and stagnation of blood, all of which are included in excess syndrome, cause night sweat, and that based on which part of the body sweats occurred we might understand pathophysiology of night sweat. The night sweat by Warm-heat, which is different from the one by Wind-cold, was considered to be caused with deficiency of Yin.Thus we conclude that the theories of night sweat developed over time, based on Chinese medical classics.

Tenmin NAMIKAWA (並河天民) thought the Shanghanlun (傷寒論) was an important text. He also taught his pupils the importance of prescribing Zhongjing ZHANG's (張仲景) medicines. Ryokyu ARIMA (有馬凉及) was a physician-teacher, who prescribed Chengqitang (承気湯) for the emperor without conferring with other doctors. His chengqitang formulary was derived from medical texts by Zhongjing ZHANG. Kyugo GODA (合田求吾) on the other hand, was a pupil of Ikkannsai MATSUBARA (松原一閑斎), who wrote in the Idokikigaki (医道聞書) : theKoho (古方) school started by Ryokyu ARIMA. He was a hero who was punished by the Goseiin (後西院) emperor. He taught Koho to Tenmin. This therefore reveals that Ryokyu ARIMA was a teacher who taught the importance of the Shanghanlun.