女子18岁以上从未来过月经者称为原发性闭经。月经已来潮而又停经3个月以上者称为继发性闭经。青春期、妊娠期、哺乳期、绝经后月经不来潮是正常的生理现象,称为生理性闭经。本文主要讨论原发性闭经。女子来月经需要有正常的下丘脑-垂体-卵巢轴调节及正常的子宫内膜和生殖道。任何一个环节出现异常均可表现为闭经。闭经的病因很复杂,常见的原发 Women over 18 years of age who have never had a menstrual cycle are referred to as primary amenorrhea. Menstrual cramps and menopause more than 3 months are referred to as secondary amenorrhea. Adolescence, pregnancy, lactation, menopausal menstrual cramps is a normal physiological phenomenon, known as physiological amenorrhea. This article focuses on primary amenorrhea. Women need to have normal menstruation hypothalamus - pituitary - ovarian axis regulation and normal endometrium and genital tract. Any one part of the abnormalities can be manifested as amenorrhea. The cause of amenorrhea is complex, common primary