Perimenopause, or menopause transition, is the stage of a woman's reproductive life that begin several years before menopause, when the ovaries gradually begin to produce less estrogen. It usualy starts in a woman's 40s, but can start in the 30s as well. Perimenopause lasts up until menopause, the point when the ovaries stop releasing eggs. In the last one to two years of perimenopause, the reduction of estrogen accelerates. At this stage, many women experience menopausal symptoms.
The transition into the menopause begins when a women begins experiencing a variety of symptoms including hot flushes, night sweats, difficulty sleeping, breast tenderness, mood swings, reduced sex drive, irregular periods, vaginal dryness, urinary problems just to name a few