Extracorporeal Shock Wave Therapy in the Treatment of Primary Dysmenorrhea

Intervention group is by extracorporeal shock wave therapy.A radial shock wave device (EMS Swiss Dolor, Munich, Germany) was used. Radial shock wave is created ballistically with the pressurized air source accelerating a bullet to strike a metal applicator. The kinetic energy produced is transformed into radially expanding shock waves from the application site into the tissue to be treated. The treatment of area is lower abdomen which has some acupuncture points such as Shenque(CV8) ,Qihai(BL24), Guanyuan(CV4), Zhongji(CV3), Tianshu(ST25), Guilai(ST29) and Zigong(EX-CA1) at the right and left sides of the lower abdomen. All acupuncture points should be placed according to participants' feedback during treatment.

Hot compress pastes will be sticked on the lower abdomen.