A missed period is one of the most common reasons women consult a gynaecologist — and one of the most anxiety-inducing. The first thought is almost always pregnancy. But when a test comes back negative, the question shifts: why has my period stopped?
The medical term for absent periods is amenorrhoea — and it is more common than most women realise. It affects women across all age groups, has a wide range of causes, and in the vast majority of cases is completely treatable once the underlying reason is identified.
Here's a clear guide to understanding amenorrhoea: what it is, what causes it, and — most importantly — when it's something you need to act on quickly.
What Is Amenorrhoea?
Amenorrhoea is the absence of menstruation. It is classified into two types based on when it occurs:Primary Amenorrhoea
This is when a girl has not had her first period by the age of 15, despite the development of other signs of puberty such as breast growth and pubic hair. It may also be diagnosed when there are no signs of puberty by age 13. Primary amenorrhoea affects approximately 1 in 200 young women and usually requires specialist investigation of hormonal or structural causes. For concerns related to puberty and adolescent menstrual health, explore Adolescent & Puberty-Related Issues at CareForHer.Secondary Amenorrhoea
This is far more common. It refers to the absence of periods for 3 or more consecutive months in a woman who previously had regular cycles, or 6 or more months in a woman with previously irregular periods. Pregnancy is the most common cause and should always be ruled out first — but when a test is negative, a broader evaluation is essential.Common Causes of Amenorrhoea
Periods don't stop without a reason. Here are the most clinically significant causes, many of which are highly prevalent in Indian women:1. Pregnancy and Breastfeeding
The most common cause of a missed period in women of reproductive age. Breastfeeding raises prolactin levels, which suppresses ovulation — causing lactational amenorrhoea that can last months after delivery.2. PMOS (Formerly PCOS) — Polycystic Ovary Syndrome
One of the leading hormonal causes of irregular or absent periods in India. Elevated androgen levels and insulin resistance disrupt the normal hormonal signals needed to trigger ovulation and menstruation. Women with PMOS may go weeks or months between periods — or stop having them altogether for extended stretches. Learn more about Menstrual Disorder Management at CareForHer.3. Thyroid Disorders
Both underactive (hypothyroidism) and overactive (hyperthyroidism) thyroid conditions can disrupt the menstrual cycle. Thyroid disorders are highly prevalent in Indian women and are one of the most commonly missed causes of amenorrhoea. A simple TSH blood test is often all that's needed to identify or rule this out.4. Hypothalamic Amenorrhoea (Stress, Weight, and Exercise)
The hypothalamus is the part of the brain that sends signals to trigger the menstrual cycle. Chronic physical or emotional stress, sudden or significant weight loss, very low body fat, or excessive exercise can all suppress hypothalamic function — causing periods to stop. This is increasingly common in urban Indian women managing high-pressure professional and personal lives.5. Elevated Prolactin (Hyperprolactinaemia)
Prolactin is the hormone that stimulates breast milk production. When prolactin levels are abnormally high outside of pregnancy or breastfeeding — due to a small benign pituitary tumour called a prolactinoma, or certain medications — it can suppress ovulation and stop periods. Symptoms often include milky nipple discharge (galactorrhoea) alongside missed periods.6. Premature Ovarian Insufficiency (POI)
Also called premature ovarian failure, this condition occurs when the ovaries stop functioning normally before age 40 — leading to low oestrogen, absent periods, and symptoms similar to early menopause. It affects approximately 1 in 100 women under 40 and requires careful management, including hormonal therapy to protect bone and cardiovascular health.7. Asherman's Syndrome (Uterine Scarring)
Scar tissue (adhesions) inside the uterine cavity — typically from a D&C procedure, uterine surgery, or severe infection — can cause periods to stop. This is a structural cause of amenorrhoea that requires hysteroscopic surgical treatment.8. Contraception
Certain hormonal contraceptives — particularly the injectable contraceptive (Depo-Provera), the progesterone-only implant, and the levonorgestrel IUD — commonly cause periods to stop. This is an expected side effect, not a medical concern. However, if periods don't return within 3 months of stopping hormonal contraception, an evaluation is warranted.9. Significant Weight Changes and Eating Disorders
Extreme weight loss, very low BMI, or conditions like anorexia nervosa reduce the body's oestrogen production — triggering hypothalamic suppression and amenorrhoea. This is a red flag that needs sensitive, multidisciplinary management including nutritional and psychological support.10. Menopause
Natural menopause — the permanent cessation of periods — typically occurs between ages 45 and 55 in Indian women. If you're experiencing missed periods alongside hot flashes, night sweats, and mood changes, explore Menopause & Hormonal Therapy at CareForHer.How Is Amenorrhoea Diagnosed?
When you see your gynaecologist for missed periods, expect the following: History: When did your periods stop? Were they previously regular? Any recent weight changes, stress, new medications, or contraceptive use? Are there other symptoms like milky discharge, hot flashes, acne, or hair growth? Key investigations:|
Test |
What It Checks |
|
Urine or blood pregnancy test |
Rules out pregnancy first |
| TSH (thyroid) |
Thyroid function |
|
Prolactin |
Rules out prolactinoma |
| FSH and LH |
Ovarian function and pituitary signalling |
|
AMH |
Ovarian reserve — important for fertility planning |
| Oestradiol |
Oestrogen levels |
|
Testosterone and DHEAS |
Rules out androgen excess (PMOS) |
| Pelvic ultrasound |
Checks ovaries, uterus, and endometrial lining |
|
MRI brain (if needed) |
Investigates pituitary gland if prolactin is elevated |
Amenorrhoea and Fertility: What You Need to Know
If periods have stopped, ovulation has likely stopped too — which directly affects the ability to conceive. The good news is that most causes of amenorrhoea are treatable, and restoring ovulation is achievable in the majority of cases. Whether through thyroid treatment, ovulation induction for PMOS, weight restoration, or prolactin-lowering medication, most women with amenorrhoea can regain regular cycles and conceive with the right management. For a comprehensive fertility evaluation, explore Infertility Treatment at CareForHer.When Should You Worry? Red Flags to Act On
Most causes of amenorrhoea are benign and manageable. However, seek medical evaluation promptly if you notice:- Periods absent for 3 or more consecutive months with a negative pregnancy test
- Milky nipple discharge alongside missed periods (may indicate a prolactinoma)
- Sudden severe weight loss or inability to eat — eating disorder-linked amenorrhoea needs urgent multidisciplinary care
- Hot flashes, night sweats, and vaginal dryness in a woman under 40 — possible premature ovarian insufficiency
- Severe pelvic pain alongside absent periods — rules out structural or gynaecological causes
- Vision changes or persistent headaches — can indicate a pituitary tumour pressing on the optic nerve
- Period never starting by age 15 — primary amenorrhoea requires early specialist evaluation to rule out structural or chromosomal causes
Amenorrhoea Treatment: What to Expect
Treatment is always targeted at the underlying cause — not the absent period itself. There is no single "cure" for amenorrhoea; the right treatment depends entirely on what's driving it.- PMOS: Lifestyle changes, metformin, hormonal therapy, or ovulation induction depending on goals
- Thyroid disorders: Thyroid hormone replacement (hypothyroidism) or treatment to reduce thyroid activity (hyperthyroidism)
- Hypothalamic amenorrhoea: Stress reduction, nutritional rehabilitation, reducing exercise intensity, psychological support
- Hyperprolactinaemia: Dopamine agonist medication (cabergoline or bromocriptine) — highly effective and usually avoids surgery
- Premature ovarian insufficiency: Hormonal replacement therapy to protect bone density and cardiovascular health; fertility options discussed with a specialist
- Asherman's syndrome: Hysteroscopic surgical removal of adhesions
- Post-contraceptive: Usually watchful waiting; ovulation induction if conception is the goal
See a Specialist in Goregaon, Mumbai
A missed period that lasts more than three months — with a negative pregnancy test — is your body signalling that something needs attention. It doesn't mean something is seriously wrong, but it does mean something is worth investigating. At Care For Her in Goregaon East, Dr. Anuja Ojha offers comprehensive evaluation for amenorrhoea — including hormonal blood tests, pelvic ultrasound, and personalised treatment planning — with a clear, step-by-step approach from diagnosis to management. Book a consultation with Dr. Anuja Ojha, Gynaecologist in Goregaon East →Frequently Asked Questions (FAQs)
Q1. What is amenorrhoea?
Amenorrhoea is the medical term for absent periods. Primary amenorrhoea means periods haven't started by age 15. Secondary amenorrhoea means periods have stopped for 3 or more consecutive months in a woman who previously had cycles.Q2. What are the most common causes of missed periods in India?
Pregnancy, PMOS (formerly PCOS), thyroid disorders, stress, significant weight changes, and hormonal contraception are the most common causes in Indian women. A gynaecologist can identify the specific cause with a few targeted tests.Q3. How many missed periods should I be worried about?
See a doctor after 3 consecutive missed periods with a negative pregnancy test. Don't wait longer — many underlying causes are easier to treat when identified early.Q4. Can stress cause periods to stop?
Yes. Chronic emotional or physical stress suppresses the hypothalamus — the part of the brain that triggers the hormonal cascade for menstruation. This is called hypothalamic amenorrhoea and is increasingly common in urban Indian women.Q5. Can amenorrhoea affect fertility?
Yes — absent periods usually mean absent ovulation, which directly affects the ability to conceive. Most causes are treatable, and restoring ovulation is achievable in the majority of cases with the right management.Q6. Will my periods come back after stopping birth control?
For most women, periods return within 1–3 months of stopping hormonal contraception. If they don't return within 3 months, consult a gynaecologist to rule out an underlying hormonal condition.Q7. Is amenorrhoea the same as PCOS?
No — but PMOS (formerly PCOS) is one of the most common causes of amenorrhoea. PMOS is a hormonal condition; amenorrhoea is a symptom that can arise from many different conditions, including PMOS.Citations & References
- Apollo 247. Amenorrhea Symptoms, Causes, and Treatment Options. apollo247.com
- Medical News Today. Absence of Menstruation (Amenorrhoea): 13 Causes. Updated August 2026. medicalnewstoday.com
- IVF Spain. Amenorrhoea: Causes of Missed Periods and When to Worry. Published August 2026. ivf-spain.com
- Healthline. Amenorrhea: Causes, Treatment, and Prevention. healthline.com
- Ubie Health. Missed Period? Why Your Body Has Amenorrhea and Medically Approved Next Steps. Published March 2026. ubiehealth.com
- Bals-Pratsch M, et al. Amenorrhea — Diagnosis and Treatment. Deutsche Medizinische Wochenschrift. 2022. PubMed. pubmed.ncbi.nlm.nih.gov
- American College of Obstetricians and Gynecologists (ACOG). Amenorrhea: Absence of Periods. FAQ. acog.org