(1) Cervical stenosis mainly blocks menstrual outflow, causing dysmenorrhea.
(2) Uterine dysplasia. Poor uterine development can easily be combined with abnormal blood supply, causing uterine ischemia and hypoxia, which can lead to dysmenorrhea.
(3) Abnormal uterine position If a woman’s uterus is extremely backward or forward, it may affect the smooth flow of menstrual blood and cause dysmenorrhea.
(4) Mental and neurological factors make some women overly sensitive to pain.
(5) Genetic factors have a certain relationship between dysmenorrhea in daughters and dysmenorrhea in mothers.
(6) Endocrine factors Abdominal pain during menstruation is related to the increase in progesterone in the luteal phase.
(7) The content of prostaglandin (PG) in the endometrium and menstrual blood increases. Prostaglandin E2 (PGE2) acts on the uterine muscle fibers to cause contraction and causes dysmenorrhea. Prostaglandin levels were significantly elevated in women with normal levels.
(8) Excessive contraction of the uterus. Although the uterine contraction pressure of patients with dysmenorrhea is basically the same as that of normal women (the normal pressure is about 4.9Kpa), the uterine contraction lasts longer and is often difficult to relax completely. Therefore, dysmenorrhea caused by excessive uterine contraction occurs.
(9) Abnormal uterine contraction. Patients with dysmenorrhea often have abnormal uterine contraction, which often leads to ischemia of uterine smooth muscle. Ischemia of uterine muscle can cause spasmodic contraction of uterine muscle, resulting in pain. And dysmenorrhea occurs.
(10) Gynecological diseases such as endometriosis, pelvic inflammatory disease, adenomyosis, uterine fibroids, etc., and placing an IUD (commonly known as the IUD) in the uterus can also easily cause dysmenorrhea.
(11) Girls have menarche, are under great psychological pressure, sit for long periods of time, which leads to poor blood circulation, poor menstrual flow, and love to eat cold foods, etc., which can cause dysmenorrhea.
(12) Strenuous exercise during menstruation and exposure to wind, cold, dampness, etc. can easily cause dysmenorrhea.
(13) The air is not irritated by certain industrial or chemical odors, such as gasoline, banana water, etc., which can cause dysmenorrhea.