Though it naturally occurs with age, menopause may also come on suddenly as a result of a surgical procedure, treatment of a disease, or illness. In these cases it is referred to as induced menopause.
When Do Women Usually Enter Menopause?
When menopause occurs naturally, it tends to take place anywhere between the ages of 40 and 58, with an average age of 51. But for some women it can occur as early as the late 30s, or as late as your 60s. When menopause occurs before 35, it is considered premature menopause, but just as menarche is genetically predetermined, so is menopause.
What Are the Symptoms of Menopause?
For many women who enter menopause, their menstrual cycle becomes irregular and then stops, and they don't have any other symptoms. But, for others, the decreasing levels of estrogen associated with menopause may cause more distressing symptoms that include:
- Mood swings
- Decreased sex drive
- Hot flashes
- Sweating
- Racing heart (palpitations)
- Headaches
- Vaginal dryness and soreness
- Trouble sleeping
- Bone thinning (osteoporosis)
What Are the Stages of Menopause?
Menopause is a gradual process. The events preceding and following menopause amount to a huge change for women both physically and socially. Physically, this process has four stages:
- Premenopause. Some experts feel that this term should include the entire reproductive period up to the final menstrual cycle whereas others consider it to refer to women on the cusp of menopause. Their periods have just started to get irregular, but they do not yet experience any classic menopausal symptoms such as hot flashes or vaginal dryness. A woman in premenopause is usually in her mid-to-late 40s. If your doctor tells you that you're premenopausal, you might want to ask him or her how he or she is using this term.
- Perimenopause. This term refers to women who are in the thick of menopause. Their cycles may be erratic, and they may begin to experience hot flashes and vaginal dryness. On average, women are about 47 when they hit the perimenopause stage.
- Menopause. This refers to your final menstrual period. You will not be able to pinpoint your final period until you've been completely free from periods for one year. Then, you count back to the last period you charted, and that date is the date of your menopause. Note: After more than one year of no menstrual periods due to menopause, any vaginal bleeding is now considered abnormal.
- Postmenopausal. This term refers to the last third of most women's lives, ranging from women who have been free of menstrual periods for at least one year to women celebrating their 100th birthday and beyond. In other words, once you're past menopause, you'll be referred to as postmenopausal for the rest of your life.
What are the Signs of Menopause?
When you begin to notice the signs of menopause, either you'll suspect the approach of menopause on your own, or your doctor will put two and two together when you report your symptoms. Two tests can help to determine what's going on and what stage of menopause you're in. Your follicle stimulating hormone (FSH) levels will dramatically rise as your ovaries begin to shut down; these levels are checked through a blood test.
In addition, your vaginal walls will thin, and the cells lining the vagina will not contain as much estrogen. Your doctor will simply take a Pap-like smear from your vaginal walls -- simple and painless -- and analyze the smear to check for vaginal "atrophy," the thinning and drying out of your vagina. It helps if you keep track of your periods and chart them as they become irregular. Your menstrual pattern will be an added clue to your doctor about whether you are pre- or perimenopausal.
The most accurate way to determine if you are in menopause it to observe for lack of menstrual cycles for 12 consecutive months when you are in the appropriate age group. Be careful during the perimenopausal period when cycles are irregular. Although there is a decline in fertility, pregnancy is still possible until menopause is reached.
Types
What Are the Symptoms of Premature Menopause?
Symptoms of premature menopause are often the same as those experienced by women undergoing natural menopause and may include:
- Irregular or missed periods.
- Periods that are heavier or lighter than usual.
- Hot flashes (a sudden feeling of warmth that spreads over the upper body).
These symptoms are a sign that the ovaries are producing less estrogen.
Along with the above symptoms, some women may experience:
- Vaginal dryness (the vagina may also become thinner and less flexible)
- Bladder irritability and worsening of loss of bladder control (incontinence)
- Emotional changes (irritability, mood swings, mild depression)
- Dry skin, eyes, or mouth
- Sleeplessness
- Decreased sex drive
In addition to the symptoms listed above, if you are under the age of 40 and experience any of the following conditions, you should see your doctor to determine whether you are undergoing premature menopause:
- You have undergone chemotherapy or radiation.
- You or a family member has an autoimmune disorder such as hypothyroidism, Graves' disease or lupus.
- You have unsuccessfully tried to become pregnant for more







