《伤寒论·辨太阳病脉证并治中》
外感风寒之邪，经过五六天，出现发热怕冷交替出现，胸胁满闷不舒，表情沉默，不思饮食，心中烦躁，总想呕吐，或者出现胸中烦闷而不作呕，或者口渴，或者腹中疼痛，或者胁下痞胀硬结，或者心慌、小便不通畅，或者口不渴，身体稍有发热，或者咳嗽的，为邪入少阳，用小柴胡汤主治。
伤寒五六日，中风，往来寒热，胸胁苦满，默默不欲饮食，心烦喜呕，或胸中烦而不呕，或渴，或腹中痛，或胁下痞硬，或心下悸，小便不利，或不渴，身有微热，或咳者，与小柴胡汤主之。
External contraction of Wind-Cold pathogen, after five or six days, fever and chills alternate, the chest and flanks are full and uncomfortable, expression is withdrawn, there is loss of appetite, irritability, a desire to vomit, which sometimes is absent, sometimes the chest is uncomfortable but there is no vomiting, sometimes there is thirst, sometimes abdominal pain, sometimes a hard lump appears under the ribs, sometimes the heart is anxious and urination is difficult, sometimes there is no thirst and the body has a slight fever, sometimes there is coughing; with pathogen entry into the Shaoyang level, treat with Minor Bupleurum Decoction.