Brown discharge before menstruation belongs to non-menstrual bleeding. There are more reasons for non-menstrual bleeding, which may be caused by ovulation bleeding, gynecological inflammation, gynecological tumor and so on.
1. Ovulation bleeding: it refers to a short drop in estrogen level during ovulation, which makes the endometrium lose the support of hormone and part of the endometrium fall off, thus causing brown discharge before menstruation, and the amount of bleeding is not much under normal circumstances.
2. Gynecological inflammation: It is common in vaginitis, cervicitis, pelvic inflammatory disease, etc. Inflammatory substances can stimulate the female reproductive system when there is such a disease, and symptoms such as abdominal pain, increased discharge and vaginal bleeding may occur. Vaginal bleeding is characterized by blood stagnation and brown discharge when it flows out.
3. Gynecological tumor: it is common in endometrial cancer, cervical cancer, uterine fibroids and other diseases, which can lead to irregular vaginal bleeding and oxidation of blood for a long period of time, and brown secretion will appear when it flows out.
There may be other reasons for brown discharge before menstruation, so you should go to the hospital for examination, clarify the cause under the guidance of professional doctors, and take active treatment.