Menopause

Definition

Menopause is the transition period in a woman's life when her ovaries stop producing eggs, her body produces less estrogen and progesterone, and menstruation becomes less frequent, eventually stopping altogether.

Alternative Names

Perimenopause; Postmenopause

Causes, incidence, and risk factors

Menopause is a natural event that normally occurs between the ages of 45 and 55.

Once menopause is complete (called postmenopause) and you have not had a period for 1 year, you are no longer at risk of becoming pregnant.

The symptoms of menopause are caused by changes in estrogen and progesterone levels. The ovaries make less of these hormones over time. The specific symptoms and how significant (mild, moderate, or severe) they are varies from woman to woman.

A gradual decrease of estrogen generally allows your body to slowly adjust to the hormonal changes. Hot flashes and sweats are at their worst for the first 1 - 2 years. Menopause may last 5 or more years.

Estrogen levels may drop suddenly after some medical treatments, as is seen when the ovaries are removed surgically (called surgical menopause). Chemotherapy and anti-estrogen treatment for breast cancer are other examples. Symptoms can be more severe and start more suddenly in these circumstances.

As a result of the fall in hormone levels, changes occur in the entire female reproductive system. The vaginal walls become less elastic and thinner. The vagina becomes shorter. Lubricating secretions from the vagina become watery. The outside genital tissue thins. This is called atrophy of the labia.

Symptoms

In some women, menstrual flow comes to a sudden halt. More commonly, it slowly stops over time. During this time, the menstrual periods generally become either more closely or more widely spaced. This irregularity may last for 1 - 3 years before menstruation finally ends completely. Before this the cycle length may shorten to as little as every 3 weeks.

Common symptoms of menopause include:

• Heart pounding or racing
• Hot flashes
• Night sweats
• Skin flushing
• Sleeping problems (insomnia)

Other symptoms of menopause may include:

• Decreased interest in sex, possibly decreased response to sexual stimulation
• Forgetfulness (in some women)
• Irregular menstrual periods
• Mood swings including irritability, depression, and anxiety
• Urine leakage
• Vaginal dryness and painful sexual intercourse
• Vaginal infections
• Joint aches and pains
• Irregular heartbeat (palpitations)

Content
licensed
from:

Reviewer Info: Susan Storck, MD, FACOG, Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Redmond, Washington; Clinical Teaching Faculty, Department of Obstetrics and Gynecology, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. ; ADAM Health Illustrated Encyclopedia, 09/02/2009

This feature is for informational purposes only and should not be used to replace the care and information received from your healthcare provider. Please consult a healthcare professional with any health concerns you may have.