Causes of menstrual cramps? A. High work pressure A long time of overload will put one’s nerves in a state of tension, and in this state, one will be more sensitive to the sensation of pain. Therefore, women in a stressful work situation, the phenomenon of pain during menstruation will lead to a sharp rise in women’s pain. Second, smoking A common cause of dysmenorrhea in women is smoking, as smoking causes vasoconstriction in the body, which leads to ischemia in the body to produce pain. Therefore, the degree of dysmenorrhea in women will also increase with the increase in the number of smoking. Third, irregular work and rest time Modern people are busy, life and rest sometimes reverses day and night. But this practice is not desirable, once the women’s rest time is not regular, it will lead to disruption of body functions, thus triggering the phenomenon of dysmenorrhea. Sometimes, some women feel irritable, nervous, anxious and fearful once they get their period, and these people are more sensitive to the feeling of pain than the average person. Moreover, the more nervous you are, the more pain you will feel under the influence of psychological effects. Five, hormonal influence Menstruation usually comes in a period of time after ovulation of the ovaries, but because the ovaries will gradually produce corpus luteum after ovulation, these corpus luteum can secrete some progesterone. Once these progesterone secretion is too much, it will lead to strong contraction of the cervix and affect the outflow of menstrual blood from the uterus. When there is more menstrual blood in the uterus, it will stimulate the uterus, which will cause strong contraction of the uterus and lead to the phenomenon of dysmenorrhea.