At the age of 41, menstruation every 18 days may be caused by irregular menstruation due to physiological factors such as staying up late and mental stress, or it may be caused by diseases such as endometrial polyps, uterine smooth muscle tumors, endometrial cancer, and so on.
1. Irregular menstruation: If you stay up late for a long time and have a lot of mental stress, it may cause irregular menstruation and menstruation every 18 days.
2. Endometrial polyp: it is mostly caused by high estrogen level, which may be manifested as bleeding between menstruation and menstruation about 18 days apart.
3. Uterine smooth muscle tumor: it is a kind of benign tumor formed by proliferation of uterine smooth muscle tissues, mostly related to heredity and high estrogen and progesterone levels, which can be manifested as shortening of menstrual intervals and irregular vaginal bleeding during non-menstrual period.
4. Endometrial cancer: it belongs to malignant tumor of endometrium, preferred in perimenopausal women, but it can also occur in women around 40 years old, mostly manifested as irregular bleeding from the vagina, accompanied by vague pain in the lower abdomen, vaginal discharge and other symptoms.
There may also be other reasons for the occurrence of 18-day intervals in 41-year-old women. If it is occasional, there is no need to worry, but if it occurs for a long period of time, it should be promptly consulted, and the diagnosis should be clarified and actively treated.