Central and Peripheral Mechanism of Acupuncture Analgesia on Visceral Pain: A Systematic Review

Figure 2

Frequency distribution of acupuncture points in the human and animal studies on visceral pain. Acupuncture points on Stomach Meridian (ST) and Conception Vessel Meridian (CV) are most frequently selected for visceral pain. Aur: auricular acupoints, Lumb: lumbar acupuncture points, n: number of studies reporting the acupuncture points, BL: Bladder Meridian, GB: Gallbladder Meridian, LI: Large Intestine Meridian, LR: Liver Meridian, PC: Pericardium Meridian, SP: Spleen Meridian, and TE: Triple Energizer Meridian.