Amenorrhea: When Your Period Stops – Causes, Diagnosis, and Treatment

A Amenorrhea: When Your Period Stops – Causes, Diagnosis, and Treatment

By Dr. Anuradha Narayanan

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Consultant Obstetrician & Gynaecologist | Anurag Women Health Care, Chembur, Mumbai

Missing Your Period? Here’s What You Need to Know

A missed menstrual period can be exciting, stressful, or confusing, depending on your circumstances. While pregnancy is the most common reason for a missed period, there are many other causes that deserve attention.

Amenorrhea is the medical term for the absence of menstrual periods. It is not a disease by itself but a symptom of an underlying condition. Fortunately, most causes of amenorrhea can be diagnosed and treated effectively.

What is Amenorrhea?

Amenorrhea is classified into two types:

Primary Amenorrhea

A girl has never started menstruating by:

• Age 15 years despite normal growth and development, or

• More than 3 years after breast development begins.

Secondary Amenorrhea

A woman who previously had regular periods stops menstruating for three or more months, or someone with irregular cycles has no periods for six months or longer.

Common Causes of Amenorrhea

1. Pregnancy

The first and most common cause that must always be ruled out.

2. Polycystic Ovary Syndrome (PCOS)

Women with PCOS often experience:

• Irregular or absent periods

• Acne

• Weight gain

• Excess facial or body hair

• Difficulty conceiving

3. Thyroid Disorders

Both underactive and overactive thyroid glands can interfere with normal menstrual cycles.

4. Elevated Prolactin Levels

A pituitary gland disorder may increase prolactin hormone levels, leading to missed periods and sometimes milk discharge from the breasts.

5. Stress

Physical or emotional stress can temporarily suppress ovulation and delay menstruation.

6. Excessive Exercise

Athletes or women involved in intense physical training may stop menstruating due to reduced body fat and hormonal changes.

7. Significant Weight Loss or Eating Disorders

Rapid weight loss, anorexia nervosa, or severe calorie restriction can disrupt hormone production.

8. Premature Ovarian Insufficiency (Early Menopause)

Some women experience loss of ovarian function before the age of 40.

9. Hormonal Contraceptives

Certain birth control pills, injections, implants, or hormonal intrauterine devices (IUDs) may cause very light or absent periods.

10. Structural Problems

Congenital abnormalities of the uterus, cervix, or vagina, or scarring inside the uterus (Asherman syndrome), may prevent menstruation.

Symptoms That May Accompany Amenorrhea

Depending on the underlying cause, you may also notice:

• Acne

• Weight gain or difficulty losing weight

• Excess facial or body hair

• Hair thinning

• Milky nipple discharge

• Hot flushes and night sweats

• Vaginal dryness

• Headaches

• Vision changes

• Pelvic pain

When Should You See a Gynaecologist?

You should seek medical evaluation if:

• You have missed three consecutive periods

• You are 15 years old and have never had a period

• Your periods suddenly stop without an obvious reason

• You have severe pelvic pain

• You suspect pregnancy

• You have symptoms such as nipple discharge, severe headaches, or vision changes

Early diagnosis helps prevent complications and improves future fertility.

How is Amenorrhea Diagnosed?

Your doctor may recommend:

Medical History

• Menstrual history

• Lifestyle and exercise habits

• Weight changes

• Stress levels

• Medication history

Physical Examination

Including pelvic examination when appropriate.

Blood Tests

These may include:

• Pregnancy test (β-hCG)

• Thyroid function tests (TSH)

• Prolactin

• FSH and LH

• Estradiol

• Testosterone and other androgen levels

• Anti-Müllerian Hormone (AMH) in selected cases

Imaging

• Pelvic ultrasound

• MRI of the pituitary gland (if prolactin is elevated or neurological symptoms are present)

• Hysteroscopy when uterine scarring is suspected

Treatment Depends on the Cause

There is no single treatment for amenorrhea. Management is tailored to the underlying condition.

Lifestyle Modification

Helpful for women with:

• Stress-related amenorrhea

• Excessive exercise

• Underweight or obesity

Medical Treatment

Depending on the diagnosis, treatment may include:

• Hormonal therapy

• Thyroid medications

• Treatment for high prolactin levels

• PCOS management

• Ovulation induction for women planning pregnancy

Surgical Treatment

May be required for:

• Congenital abnormalities

• Uterine adhesions (Asherman syndrome)

• Rare structural causes

Can Amenorrhea Affect Fertility?

Yes, particularly if ovulation is absent. However, many women conceive successfully once the underlying condition is identified and treated.

Women with PCOS, thyroid disorders, elevated prolactin, or premature ovarian insufficiency benefit from early evaluation if pregnancy is desired.

Can Amenorrhea Be Prevented?

Some causes cannot be prevented, but you can reduce your risk by:

• Maintaining a healthy weight

• Eating a balanced diet

• Managing stress

• Exercising in moderation

• Seeking early medical advice for irregular periods

• Attending regular gynaecological check-ups

Frequently Asked Questions (FAQs)

Is it normal to miss one period?

Occasionally, yes. Stress, illness, travel, or hormonal fluctuations can delay a cycle. Persistent missed periods should be evaluated.

Can PCOS cause no periods at all?

Yes. Many women with PCOS experience infrequent or absent ovulation, leading to prolonged gaps between periods.

Can stress stop periods?

Yes. Significant emotional or physical stress can temporarily suppress ovulation.

Should I worry if I’m not trying to get pregnant?

Yes. Even if pregnancy is not a concern, absent periods may indicate hormonal or medical conditions that require treatment.

Can amenorrhea be cured?

In many cases, yes. Once the underlying cause is identified, normal menstrual cycles often return with appropriate treatment.

Take-Home Message

Amenorrhea is your body’s way of signalling that something may need attention. Whether the cause is pregnancy, PCOS, thyroid disease, stress, or another hormonal imbalance, timely evaluation is essential.

If your periods have stopped unexpectedly or have never started, don’t ignore the symptoms. Early diagnosis can protect your reproductive health, bone health, and overall well-being.

At Anurag Women Health Care, Chembur, Mumbai, we provide comprehensive evaluation and personalized treatment for menstrual disorders, PCOS, hormonal imbalances, fertility concerns, and adolescent gynaecological problems.