Menstruation does not come because what reason

summary

Menstruation is a sign of every girl's maturity, once a month. It's usually about three to seven days. When the endometrium occurs a spontaneous thickening, vascular proliferation, gland growth and secretion, as well as endometrial collapse and fall off, accompanied by periodic changes of bleeding. This periodic vaginal discharge or uterine bleeding phenomenon is called menstruation. But some people are not cyclical, there will be delayed or do not come, so what is the reason for menstruation, let's take a look.

Menstruation does not come because what reason

Reason 1: Uterine reasons. Also known as uterine amenorrhea, amenorrhea caused by uterine problems, such as uterine dysplasia, endometrial adhesions or scars. There are also women in the emergence of menarche after the disease, such as endometrial tuberculosis, endometrial schistosomiasis, endometrial suppuration, ovarian hormone can not react normally and secondary amenorrhea. 　

Reason 2: ovarian reasons. Also known as ovarian amenorrhea, normal menstruation is due to ovarian secretion of hormones in the endometrium, so that it changes, shedding, bleeding and formation. If the ovary can not normally secrete hormone, the endometrium will not change, menstruation will stop naturally, such as congenital ovarian dysplasia, premature ovarian failure and so on.

Reason 3: central nervous system. The central nervous system includes the brain and hypothalamus, which not only command the pituitary, but also control ovarian function. When the central nervous system is stimulated, the ovarian function changes and causes amenorrhea. Such as lovelorn, bereaved, work failure, may cause sudden amenorrhea.

matters needing attention

Menstruation does not come, or delay to come, female friends must pay attention, this is likely to be the early signs of some diseases.