(1) Ovulation disorders: and endocrine abnormalities; normal ovulation can not be due to ovarian infertility is often due.However, a number of organizations by Ovulatory dysfunction caused by the diagnosis should distinguish the question of which parts of the obstacles leading to ovulation.① endocrine dysfunction; as a result of the hypothalamus - pituitary - ovarian axis hormone secretion disorders, ovulation can lead to obstacles.② inadequate luteal phase: luteal phase as a result of defects and shortened luteal phase, resulting in endometrial dysplasia, so that fertilized egg is not easy implantation, or implantation and early abortion though.
Editor's Choice: men's pre-inspection before
(2) polycystic ovary syndrome, often associated with irregular menstruation, ovariectomy increased, such as obesity and hirsutism.
(3) cervical abnormalities or inflammation.
(4), uterine abnormalities, uterine fibroids, chronic inflammation, adhesion and so on.
(5) malformation or blockage of fallopian tubes.
Editor's Choice: pregnancy of a healthy baby
(6) endometriosis.
