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Definition

Absent menstruation means no menstrual flow, or period. Absent menstruation may be:

  • Primary -- no menstruation before age 16
  • Secondary -- menstruation begins at the appropriate age, but later stops for more than 3 cycles or 6 months

Absent menstruation is called amenorrhea.

Alternative Names

Missed periods; Lack of menses; Periods - missed; Amenorrhea

Considerations

Many perfectly healthy females begin to menstruate later than most (the average age is about 13).

Pregnancy is often the first thought when a period is missed, but there are many reasons for having a late period. The rate of primary amenorrheain the United States is less than 1%. The rate of secondary amenorrhea (due to some cause other than pregnancy) is about 4% in the general population.

Symptoms associated with amenorrhea depend on the cause and may include:

Common Causes

Causes of primary amenorrhea:

  • Delay may be normal if puberty characteristics, such as breast development, are present by age 13
  • Birth defects of the female reproductive system
  • Lack of an opening in the membrane at the entrance of the vagina (hymen)
  • Problem with the hypothalamus or pituitary gland

Factors that can disrupt normal menstruation include:

Causes of secondary amenorrhea:

  • Pregnancy
  • Stress and anxiety
  • Drastic weight reduction
  • Significant weight gain or obesity
  • Hormonal imbalance (such as with polycystic ovarian syndrome)
  • Endocrinedisorders such as thyroid disease or pituitary disease/tumor
  • IUD use
  • Too much exercise
  • Premature ovarian failure
  • Menopause(normal for women over age 45)
  • Use of Birth Control pills and other contraceptives
  • Uterine scarring, usually from procedures such as dilation and curettage (D and C)
Home Care

Treatment depends on the cause.

For amenorrhea caused by normal delay of menstruation onset, have patience until age 16. However, keep in mind that the delay is only normal if the girl displays some signs of puberty, such as breast development by age 14.

Call your doctor to determine if you may be pregnant.

A proper diet is recommended for a missed period caused by drastic weight lossor obesity.

If your missed period is the result of too much exercise, cutting back to a more conservative workout program can help.

Call your health care provider if

Call your health care provider if:

  • Your daughter has never had a menstrual period and is 16 or older, or is 14 or older and shows no other signs of puberty
  • You have previously menstruated but have missed 3 or more periods in a row
What to expect at your health care provider's office

The first step is to rule out pregnancy. This is done with a urine or blood test. (See: Pregnancy test)

The doctor will perform a physical exam and ask questions about your medical history. Questions may include:

  • Menstrual history
    • Are you a woman presently in a menstruating age range (over 12 and under 55)?
    • Are you sexually active?
    • Do you use birth control? What type?
  • Quality
    • Was the previous menstrual period a normal amount?
    • Are the menses absent or decreased?
    • Do you usually have regular periods?
  • Time pattern
    • When was your last menstrual period?
    • At what age did you have your first menstrual period?
    • Have you ever had normal periods?
  • Aggravating factors
    • What medications do you take?
    • How much do you exercise?
    • Have you lost or gain a lot of weight?
  • Other symptoms

Tests that may be performed include:

Treatment depends on the cause of the amenorrhea. Your doctor may tell you to make lifestyle changes if the absent menstruation is due to weight changes, physical activity, or stress level. If you have polycystic ovarian syndrome or athletic amenorrhea, you may be given hormonal contraceptives to treat the problem.

If the absent menstruation is caused by another systemic disorder, normal menstrual function usually returns after the primary disorder is treated. For example, if the primary disorder is thyroid or pituitary disease, medicines will be prescribed.

Young women with primary amenorrhea that is caused by birth defects may require medicine, surgery, or both. In any case, psychosocial support and counseling for the patient and family is necessary to address specific concerns and provide guidance regarding anticipated sexual development.

References

Master-Hunter T, Heiman DL. Amenorrhea: evaluation and treatment. Am Fam Physician. 2006;73:1374-1382.

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14y ago

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