7.Endometrial and menstrual blood prostaglandin (PG) level increased, prostaglandin E2 (PGE2) work on uterine muscle fibers make it shrink cause dysmenorrhea . Patients endometrial
tissue prostaglandin content was significantly higher than normal women.
8.Excessive uterine contractions. Although patients with dysmenorrhea uterine contraction pressure and normal women basically the same (normal pressure of about 4.9Kpa), but uterine
contractions longer duration, and it is difficult to completely relax, so excessive uterine contractions caused dysmenorrhea.
9.Abnormal uterine contractions. Dysmenorrhea patients often have abnormal uterine contractions, which often lead to uterine smooth muscle ischemia, ischemia can cause
uterine muscle spasm, resulting in dysmenorrhea.
10.Gynecological diseases such as endometriosis, pelvic inflammatory disease, adenomyosis, uterine fibroids, and so on. Place IUD (commonly known as IUD) in utero also easy to
11.Girls menarche, psychological stress, sedentary lead to deterioration of blood circulation, blood running sluggish, eat cold food, etc., causing dysmenorrhea.
12.Menstrual periods strenuous exercise, cold, wet invasion, are easy to cause dysmenorrhea.
13.Upset chemical odors pollute from some industrial, such as gasoline, banana water, etc., cause dysmenorrhea.