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What is Amenorrhea? Symptoms, Causes, Diagnosis, and Treatment

Oghenefejiro Okifo | MD

Medically reviewed by Oghenefejiro Okifo | MD, Harvard Medical School | Henry Ford Hospital - Detroit, MI on August 11th, 2023.

Key Takeaways

  • Primary form occurs when no period begins by age 15, while secondary develops when normal periods stop for 3+ consecutive months, affecting 3-4% of women of reproductive age.

  • Pregnancy and breastfeeding account for the majority of cases, but PCOS affects 6-12% of women and represents the leading pathological cause in adolescents and young adults.

  • Associated symptoms include galactorrhea (milky nipple discharge), hirsutism (excessive facial hair), visual field defects from pituitary tumors, and hot flashes indicating estrogen deficiency.

  • Diagnostic workup starts with a pregnancy test, followed by FSH, LH, prolactin, and TSH levels, plus pelvic ultrasound to evaluate ovarian and uterine structure.

  • Hormone replacement therapy can prevent bone loss and cardiovascular complications when estrogen deficiency persists longer than 12 months, particularly in women under 40.

Amenorrhea is a condition where a woman does not get her menstrual period. This can happen even if she has gone through puberty, is not pregnant, and has not reached menopause. While not a disease itself, amenorrhea can be a symptom of an underlying medical issue that may require treatment. In this article, we'll explore the symptoms, causes, diagnosis, and treatment options for amenorrhea.

Types of Amenorrhea

There are two main types of amenorrhea:

  1. Primary Amenorrhea: This occurs when a young woman has not had her first period by age 15.

  2. Secondary Amenorrhea: This happens when a woman who has had normal menstrual cycles stops getting her period for 3 months or more.

Symptoms of Amenorrhea

The main symptom of amenorrhea is not getting your period. However, depending on the underlying cause, you may also experience:

  • Pelvic pain

  • Vision changes

  • Headaches

  • Acne

  • Hair loss or excessive facial hair growth

  • Milky nipple discharge

  • Lack of breast development (in primary amenorrhea)

What is Amenorrhea? Symptoms, Causes, Diagnosis, and Treatment

Causes of Amenorrhea

Amenorrhea can have many possible causes. For primary amenorrhea, these may include:

  • Ovarian failure

  • Issues with the central nervous system or pituitary gland

  • Problems with reproductive organs

Common causes of secondary amenorrhea include:

  • Pregnancy and breastfeeding

  • Stopping birth control

  • Menopause

  • Certain birth control methods (e.g., Depo-Provera, some IUDs)

  • Stress, poor nutrition, or depression

  • Certain medications (antidepressants, antipsychotics, blood pressure drugs, allergy meds)

  • Extreme weight loss or gain, or obesity

  • Polycystic ovary syndrome (PCOS)

  • Thyroid disorders

  • Ovarian or brain tumors (rare)

  • Cancer treatments (chemo, radiation)

  • Uterine scarring

Removal of the uterus or ovaries will also stop menstruation.

Diagnosing Amenorrhea

Because amenorrhea has many potential causes, your doctor may need to perform several tests to determine the underlying issue. These may include:

  • Pregnancy test

  • Blood tests to check hormone levels

  • Imaging tests (ultrasound, CT, MRI) to look for abnormalities

  • Hormone challenge test

  • Hysteroscopy (looking inside the uterus with a camera)

  • Genetic screening and chromosome tests

Tracking changes in your menstrual cycle and any related symptoms can help your doctor identify the cause. Be sure to share information about your medications, diet, exercise, and stress levels.

Treating Amenorrhea

Treatment for amenorrhea focuses on addressing the underlying condition. Options may include:

  • Hormone replacement therapy or birth control pills to restart the menstrual cycle

  • Medication for thyroid or pituitary disorders

  • Surgery for physical abnormalities

  • Managing stress, weight changes, or depression through lifestyle changes and support from loved ones or professionals

When to See a Doctor

If you have missed your period for several months, it's important to talk to your healthcare provider. While amenorrhea itself is not a disease, it can be a sign of an underlying medical issue that needs attention. With proper diagnosis and treatment, most cases of amenorrhea can be managed effectively, allowing you to maintain good reproductive health.

The Bottom Line

Missing periods for more than 3 months requires medical evaluation to identify treatable underlying causes and prevent long-term health complications from hormonal imbalances. Early intervention with appropriate hormone therapy or treatment of conditions like PCOS can restore normal cycles and protect bone health. If you're experiencing absent periods or related symptoms, Doctronic can help connect you with proper evaluation and treatment options.

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