[Nomenclature of Feiyang (BL 58) and its connotation exploration based on A- B Classic of Acupuncture and Moxibustion]

A-B Classic of Acupuncture and Moxibustion (Zhen Jiu Jia Yi Jing) is the earliest and existed well-known work on acupuncture and moxibustion, with irreplaceable literature values and huge impacts on the later generations. Feiyang (BL 58) is the luo-connecting point of the bladder meridian and recorded 11 times in A-BClassic of Acupuncture and Moxibustion. This book is the representative for the exploration on the acupoint nomenclature and clinical connotation. Through the investigation on the textual connotation of the specified terms and the alias of Feiyang (BL 58), it was discovered that the nomenclature of this acupoint was based on the main symptoms, the characters of the running course of meridian and acupuncture effects. It was proved that the unique property of this acupoint was as rising, dispersing and flying of meridian qi. In comparison of Huangdi Three-Version of A-B Classic of Acupuncture and Moxibustion (Huangdi Sanbu Zhen Jiu Jia YiJing) of the printed edition of the Song Dynasty version and Meridian-Collateral and Acupoints (Zhen Jiu Shu Xue Xue), it was found that the indications and connotation of Feiyang (BL 58) were more extensively richer than the records in teaching materials. Those study results contribute to the extension of the clinical application of this acupoint.