What's wrong with the little brown period?

Under normal circumstances, women to a menstrual volume of 20 to 60ml, and menstrual blood is dark red. If the menstrual brown and small, first consider may be related to ovarian function, endocrine disorders, can cause thin endometrium, so menstrual volume is also relatively small. In addition, consider may also be related to frequent abortion, multiple uterine surgery and other factors. It may also be related to some gynecological diseases, such as vaginitis, cervicitis, endometritis, endometrial polyps, uterine dysplasia, polycystic ovary syndrome, hyperprolactinemia, etc. Therefore, in order to clarify the cause, it is recommended to go to the hospital to check gynecological color ultrasound and sex hormones.