Most girls will have their first period around the age of 13 to 15, which means that their uterus has developed normally and they are able to become pregnant and have children. After menarche, menstruation will come regularly every month. Under normal circumstances, a woman's menstrual cycle is about 28 to 35 days. If the cycle is longer but more stable, there is no problem with the woman's body. Many women have experienced the sudden absence of menstruation. What are the reasons for the sudden absence of menstruation? Reasons for sudden absence of menstruation The side effects of drugs lead to amenorrhea. Drugs can affect women's endocrine system. For example, taking birth control pills, diet pills, drainage drugs, etc. can cause endocrine disorders in women, thereby affecting menstruation and leading to amenorrhea. Contraceptive pills: The main ingredients of contraceptive pills are progesterone and estrogen. By taking contraceptive pills, women's ovulation is inhibited, thereby interfering with the combination of egg and sperm to achieve the purpose of contraception. However, if you take too many birth control pills, the drug ingredients will affect the ovaries' secretion of estrogen, and the endometrium will not grow normally, resulting in a thin endometrium, which will lead to a decrease in menstrual flow or even amenorrhea. Diet pills: For example, hormonal diet pills generally contain thyroid hormones, etc. Improper use of diet pills can easily lead to menstrual disorders in women, symptoms of irregular menstruation or amenorrhea, affect normal menstruation, and in severe cases may cause infertility. Drainage drugs: Medical abortion generally involves taking the receptor-level anti-progesterone drugs mifepristone and misoprostol tablets. These drugs will inhibit central dopamine receptors, reduce the amount of hypothalamic releasing factors entering the anterior pituitary, and thus lead to a decrease in the secretion of gonadotropin and corticotropin by the anterior pituitary, leading to amenorrhea and delayed ovulation. After the drainage drugs enter the human body, they will damage the endometrium, which requires a period of time to repair. Generally, menstruation will resume about a month after the medical abortion, but menstruation may not come for 40-50 days. Surgery can cause amenorrhea. Surgery can affect menstruation. For example, intrauterine surgery can cause cervical adhesions, resulting in menstrual blood stasis in the uterus, leading to symptoms of amenorrhea and delayed menstruation. Abortion surgery: Abortion surgery generally includes negative pressure aspiration and forceps curettage. If the curettage is performed improperly, it is easy to cause damage to the cervix, or damage the basement membrane of the endometrium, causing adhesion of the internal os of the cervix, or partial adhesion of the uterine wall, thus leading to amenorrhea. Ovarian cyst surgery: After ovarian cyst surgery, the uterus and ovaries need some time to recover. Some women resume menstruation one month after the surgery. Pathological factors lead to amenorrhea. Pituitary tumors, hypopituitarism, premature ovarian failure, ovarian hypoplasia, etc. may all lead to amenorrhea. |
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