Technically, menopause is the point in time when a woman has had no menstrual period for 12 consecutive months.
Perimenopause is the time period leading up to this milestone, characterized by fluctuating hormone levels.
Symptoms may occur earlier, but most women experience the physical and emotional changes of perimenopause in their late 40s or early 50s when:
95% of women experience menopause after the age of 45.