This randomized controlled trial is to determine the effect of shock wave therapy in the treatment of primary dysmenorrhea.~females are randomly assigned into 2 groups: group A SWT treatment plus dietary modification during PD (n=25） GROUP B:dietary modification only (n=25）;~Participants in group B will receive dietary modification for three successive months~The numerical rating scale (NRS) and prostaglandin blood level will be recorded and evaluated before and after treatment.
purpose of this study to investigate the effect of Extracorporeal shock wave therapy on pain and prostaglandin level in patient with primary dysmenorrhea