"Perimenopause is the transition period between a woman's reproductive years and menopause. The perimenopause period of a woman's life often lasts for years. During this transition time, periods will be erratic and a woman may begin to experience some of the common symptoms of menopause such as night sweats.
What is Menopause?
Menopause is the time in a woman's life when she comes to the end of her fertility. Medically speaking, a woman is in menopause when she hasn't had a menstrual cycle for 12 months in a row.
What is the Average Age For Menopause?
Most women start menopause somewhere between their mid-40s and mid-50s. However, it can start much earlier or much later than that. The average age of menopause onset is 51 in the United States.
What Are the Common Symptoms Associated With Menopause?
Many women experience unpleasant symptoms during menopause, including hot flashes, night sweats, mood swings, depression, irritability, vaginal dryness, lack of sex drive, insomnia, and memory lapses."