The absence of menstruation for 12 months is generally referred to as menopause.
Most women go through menopause between the ages of 45 and 55. Some women go through menopause quickly, while others push their periods back, gradually, for two or three years before they finally go through menopause. Generally, menopause is considered to occur if a woman has not had a period for 12 months in a row, but some women will have a period once in a while after 4 or 5 months of menopause, which is not considered menopause but perimenopause.
If menopausal symptoms are serious before and after menopause, you can take oral Chinese medicine or hormones to help you get through this period. Long-term oral hormone therapy to maintain menstruation is also a good option.
In conclusion, menopause is considered to have occurred if menstruation has not occurred for 12 consecutive months, and the time of menopause varies from woman to woman.