menstruation less common causes are:
1, after a few more by the pituitary gland dysfunction, ovarian secretion of estrogen deficiency, low levels of estrogen, the lack of endometrial hyperplasia, endometrial thin lead a; long-term use of contraceptives can cause,
2, and endometrial lesions such as: endometrial dysplasia, grossly damage the lining curettage, endometrial tuberculosis.
3, there is the individual differences, that is, after menarche, has been through a very small, but normal ovulation and reproductive functions, etc..
4, the reduction of menstrual amenorrhea is often threatened.
hello! after a few months is common in ovarian secretion of estrogen deficiency , endometrial dysplasia, many people, violent injury endometrial curettage, use of contraceptives, body weakness, anemia and other reasons, to recommend you go to the hospital to be clean after menstruation B-or sex hormones checked, identify the reasons After treatment for.