How are the acupoints in YNSA organized?
A. YNSA is divided into the left and right side of the head. The left side of the head is further divided into the yin side, or front of the head; and the yang side, which is the posterior, or back of the head. The dividing line between the front and back of the head comes where the top of the ear attaches to the skull. The yin side and the yang side are each further divided into an upper and lower half. This yields 12 acupoints representing the 12 meridians on the lower half of the yin, or left side of the head, and 12 acupoints on the upper half of the yin side of the head. Thus there are 24 points in front of the ear in the yin area; the same is true for the yang, or right side. Q. How painful is YNSA A. YNSA is less painful than drawing blood. However, there is some pain involved because there is not a lot of fat where YNSA needles are inserted. The head has a lot of nerve endings and is thus a sensitive area.
