Chengjiang (CV24) Skin subcutaneous tissue-orbicular muscle of moyth-depressor muscle of lower lip-mental muscle.
There are the mental nerve of the inferior alveolar nerve and the mental artery and vein in this area.
Proper sitting with one's back propped; in the depression at the centre of groove on the midpoint of the line connecting lower lip and tip of chin.
Removing wind and dredging the collaterals, tranquilizing the mind and relieving thirst.
Facial puffiness, swelling of the gums, toothache, salivation, mental disorders, and deviation of the eyes and mouth.
Combined use with ShuigouGV26 (Shuigou (GV26)) and ZusanliST36 (Zusanli (ST36) He-Sea Point) for treatment of collapse; with LianquanCV23 (Lianquan (CV23)) for treatment of salivation; with WeizhongBL40 (Weizhong (BL40) He-Sea Point, Lower Confluent Point) for treatment of epistaxis; with JiacheST6 (Jiache (ST6)) for treatment of infantile tetanus; and with YinlingquanSP9 (Yinlingquan (SP9) He-Sea Point), WeizhongBL40 (BL40), TaichongLR3 (Taichong (LR3) Shu-Stream, Yuan-Source Point), PangguangshuBL28 (Pangguangshu (BL28)), and DadunLR1 (Dadun (LR1) Jing-Well Point) for treatment of incontinence of urine.
Insert the needle subcutaneously to 1-1.5 cun depth; needling response: local distention and pain; moxibustion: using 3-5 moxa-cones, or mild moxibustion for 10 min.