Normal menstruation is caused by an endocrine regulation of the hypothalamic-pituitary-ovarian axis, which causes the endometrium to shed periodically to form the menstrual flow. Generally if it is inflammation, there can be systemic inflammation, systemic inflammation can be treated with anti-inflammatory drugs, generally the drugs will not affect the onset of menstruation, menstruation is still regulated by endocrine regulation. If the inflammation is of the reproductive system, such as the ovaries, fallopian tubes, endometrium, etc., it can also be treated with anti-inflammatory drugs. If the inflammation is not very serious, anti-inflammatory drugs usually do not affect the amount of menstruation, menstrual period and menstrual cycle, but only in particularly serious cases may affect menstruation.