Menstruation in women is the result of the interaction of the cerebral cortex, hypothalamus, pituitary gland, ovaries and uterus, and is regulated by neuroendocrine. Irregular menstruation after artificial abortion may be caused by the following reasons:

When a person is overly nervous, fearful, sad, overworked, or undergoing surgery, the neuroendocrine system can inhibit the hypothalamus, The functions of the pituitary gland, ovaries, and uterus can lead to abnormal menstruation.

After artificial abortion, fetal chorionic gonadotropin suddenly disappears, so that the ovary cannot respond to the gonadotropin secreted by the anterior pituitary gland for a while, so irregular menstruation may also occur.

In the process of artificial abortion, if the basal layer of the endometrium is damaged too much, the endometrium cannot regenerate, causing the patient to suffer from long-term amenorrhea.