Pain-Induced Pulsograph Changes in Patients with Primary Dysmenorrhea: A Pilot Study

Figure 2

VAS pain scores of 30 PD patients at , , , and . Notes: means 7–10 days before menstruation, means maximal pain (VAS pain scores ≥ 5) during menstruation, means immediately after acupuncture analgesia, and means 30 mins after acupuncture analgesia. , compared with ; , compared with ; , compared with .