What's wrong with poor menstruation?

The phenomenon of less menstrual flow, more and endocrine related, such as endocrine disorders, hypothyroidism, ovarian decline, hyperprolactinemia and other diseases, there will be reduced menstrual flow phenomenon. Secondly, there may be related to the uterus, when endometrial damage, or the occurrence of uterine adhesions, endometriosis and other circumstances, there will also be reduced menstrual phenomenon.