What is the reason for having brown secretions before menstruation?

If women show brown secretions before menstruation, generally speaking, this situation exists luteal insufficiency. If regular performance, can be in the 14th day of menstruation with progesterone to conditioning, generally medication for seven days to ten days, continuous treatment for three months, this situation can be improved. In addition, you can do b-ultrasound to see, to determine whether there are endometrial polyps or thick by the endometrium, or even submucosal fibroids. If a woman has a thick endometrium, a diagnostic curettage should be performed to determine whether the cause of the thick endometrium is simple hyperplasia, complex hyperplasia or atypical hyperplasia, and then appropriate medications should be selected for conditioning and intensive monitoring. If precancerous lesions are present, surgery may be required.