Does every girl have menstrual cramps?

Not every girl will experience symptoms of dysmenorrhea. This condition is caused by multiple factors, the most typical of which are mental and genetic factors. During the attack, the most common feeling girls have is abdominal pain. In more serious cases, they will intuitively feel their blood vessels spasming, which will eventually lead to ischemia inside their uterus, which will have a greater impact.

1. The occurrence of primary dysmenorrhea is mainly related to the increase in endometrial prostaglandin content during menstruation. Elevated PGF2α levels are the main cause of dysmenorrhea. High levels of PGF2α can cause excessive contraction of uterine smooth muscle and vascular spasm, resulting in uterine ischemia and hypoxia and dysmenorrhea.

2. Increase in substances such as vasopressin, endogenous oxytocin and β-endorphin.

3. Mental and neurological factors.

4. Secondary pain is often caused by endometriosis, adenomyosis, etc.

(82%) It gradually decreases after the age of 30 to 35, stabilizes at around 40% in the middle of the reproductive age, and then even lower, maintaining at 20% at the age of 50. The start of sexual life can reduce the incidence of dysmenorrhea. A five-year follow-up survey of 19-year-old Swedish women showed that the incidence of dysmenorrhea dropped from 72% to 67% by the age of 24. The severity also decreased.

Childbirth is another important factor. The incidence and severity of dysmenorrhea in women with a history of full-term pregnancy and childbirth are significantly lower than those in those without a history of pregnancy and those who are pregnant but have a spontaneous abortion or induced abortion. This is because the adrenergic nerves that innervate the smooth muscle cells of the uterus almost disappear near full term, and the level of uterine norepinephrine also decreases; after delivery, these nerve endings only partially regenerate, and the level of uterine norepinephrine cannot return to the pre-pregnancy level.

This change in uterine neuromuscular activity after full-term pregnancy can explain why dysmenorrhea is reduced or disappears after full-term delivery, but there is no such change in women who have had a miscarriage. In addition, women who have early menarche or long and heavy menstruation may experience severe dysmenorrhea. The incidence of dysmenorrhea is significantly reduced in those who take birth control pills. Dysmenorrhea also shows certain family characteristics. The mothers and sisters of those who suffer from dysmenorrhea often suffer from dysmenorrhea. The degree of dysmenorrhea is reduced in those who smoke. Education level and physical activity were not associated with dysmenorrhea.

Other studies have shown that special occupations and working environments are also related to dysmenorrhea. Women who have long-term exposure to mercury and benzene compounds (even at low concentrations) have an increased incidence of dysmenorrhea. Cold working environments are also related to dysmenorrhea.