Why some girls don't have pain?

Not all girls will show dysmenorrhea, some girls in menstruation, the body's prostaglandin will not be significantly increased, so there will be no dysmenorrhea performance, but also belongs to the anterior position of the uterus, menstrual blood discharge and relatively smooth, so there will be no menstrual blood deposition caused by pain phenomenon. In fact, women during menstruation, no dysmenorrhea is often a physiological performance. If dysmenorrhea is too severe, it may be caused by a disease, either primary dysmenorrhea or organic diseases of the uterus and ovaries, such as chocolate cysts in the ovary or adenomyosis in the uterus, which may cause severe dysmenorrhea.