Topic summary
Premenopause
Extracted from the Wikipedia article Menopause.
Stages of menstrual cycle changes
According to the gold-standard STRAW +10 framework, the transition is divided into clear and biological milestones: premenopause covers regular cycles; perimenopause is explicitly defined by a persistent cycle length variation of over 7 days or skipped cycles of over 60 days; and menopause is confirmed retroactively after 12 consecutive months without bleeding.