Secondary amenorrhea
Secondary amenorrhea is absence of menstruation more than three months in women Menstrual period. Normal menstruation period is endocrine hormone adjustment process in hypothalamus - pituitary - ovarian hormone secrete. Among them, pituitary gonadotropin is a leading rol in the regulation of ovarian function and maintenance of menstruation period. When occur Secondary amenorrhea, is often accompanied by depression, irritability irritability, weakness, dizziness, tinnitus, palpitations shortness of breath, weakness and other symptoms.
Common causes of Secondary amenorrhea is injury or endometrial adhesion (commonly found in many endometrial curettage injury, cause intrauterine adhesions), tuberculous meningitis, premature ovarian function, Sheehan's syndrome (due to postpartum hemorrhage, shock cause anterior pituitary ischemia, necrosis of pituitary hypofunction and amenorrhea).
Other causes of Secondary amenorrhea include the following:
1, the lack of nutrition. In particular is lack of protein, vitamins, can reduce endocrine function, suppress secretion of pituitary gonadotropin, and also to reduce the target organ for the hormone response, such as endometrial sensitivity to sex hormones, and cause amenorrhea. The main causes is poor diet, lack of food proteins, lipids, vitamins, inadequate intake.
2, If the amenorrhea is not long term, or occasional, may be caused by spirit of excitement, anxiety, fatigue, environmental change, the cold stimulation, malnutrition. Changes in these external factors can inhibit the central nervous system function, thereby reducing the secretion of pituitary gonadotropin and cause amenorrhea.
3, Use contraceptives. Sometimes after take contraceptive can directly inhibit pituitary gonadotropin secretion and cause amenorrhea.
4, Certain gynecological diseases, such as endometrial tuberculosis, intrauterine adhesions by repeated curettage, polycystic ovary, premature ovarian failure; endocrine system disorders, amenorrhea galactorrhea syndrome, hypothalamic-pituitary dysfunction; systemic wasting disease, such as severe anemia, tuberculosis, cancer, etc., which may cause amenorrhea.
When secondary amenorrhea occur, it is timely to go to the hospital to check, according to medical history and physical examination, relevant examinations, hormone determination to find the cause of amenorrhea. Some patients can restored menstruation period through physical and psychological adjustment or non-use contraceptives, some patients can restore by progesterone, induced ovulation. Damage to ovarian function resulting in premature ovarian function can use hormone replacement therapy.