Amenorrhoea (Absent Periods): Online Assessment

Can an online doctor help with absent periods (amenorrhoea)?

Mobi Doctor, an online healthcare service with licensed doctors, follows that order on purpose. Pregnancy is the single most common reason regular periods stop, so it is ruled in or out first, before anything else is assumed. Only then does the work-up move on to hormones, thyroid, weight and the other causes below.

How an online consultation helps with amenorrhoea

What is amenorrhoea?

Amenorrhoea is the medical word for absent menstrual periods. Doctors divide it into two kinds, and the split matters because it changes the work-up.

Primary amenorrhoea

Periods have never started. This is usually assessed if there is no period by around age 15 with otherwise normal development, or by around 13 with no signs of puberty at all. The causes range from a simple constitutional delay to hormonal, genetic or anatomical reasons, and it almost always warrants specialist gynaecology or endocrinology assessment rather than treatment at a distance.

Secondary amenorrhoea

Periods started but have since stopped, defined as no periods for three months in someone with previously regular cycles, or six months if cycles were irregular.^[1] This is the more common scenario in adults, and pregnancy heads the list of causes. Missing the occasional period, or slightly irregular cycles, is a slightly different question, but a run of missed periods is worth assessing.

What causes amenorrhoea?

Periods depend on a chain of signals from the brain to the ovaries and womb, so anything that interrupts that chain can stop them. The common causes group into a handful of patterns.

Pregnancy, breastfeeding and the menopause transition

Pregnancy is by far the most frequent reason regular periods stop, which is exactly why it is tested first.^[1] Breastfeeding suppresses periods for a while after childbirth, and in the years around the menopause, cycles naturally become irregular and eventually cease. Periods stopping before around age 40, though, is not normal ageing and points to premature ovarian insufficiency, which needs assessment.^[4]

Polycystic ovary syndrome (PCOS)

PCOS is one of the most common hormonal reasons for infrequent or absent periods in younger women. It often comes with acne, excess facial or body hair, and weight that is hard to shift, and it is diagnosed on a combination of features rather than a single test.^[2] Recognising it matters because managing the hormonal driver, and protecting the womb lining when periods are very infrequent, becomes part of the plan.

Thyroid problems and raised prolactin

An underactive or overactive thyroid can disrupt periods, and both are simple to check on a blood test. A raised level of the hormone prolactin can also switch periods off; it may be triggered by certain medicines or, less commonly, by a small benign pituitary growth, and milky nipple discharge or persistent headaches are clues worth mentioning.^[1]

Weight, exercise and stress

The brain can quietly pause the cycle when the body reads its circumstances as unsafe for pregnancy: very low body weight, rapid weight loss, heavy endurance training or sustained stress can all do it, a pattern doctors call hypothalamic amenorrhoea. It is common in athletes and in restrictive eating, and it is important precisely because absent periods from low oestrogen also affect bone strength over time. This one is treated by addressing the underlying balance, sometimes with specialist support, not by forcing a bleed.

Contraception and medicines

Several forms of contraception reduce or stop periods on purpose, including the hormonal coil, the implant, the injection and continuous use of the pill, and this is expected and harmless. Some other medicines affect the cycle too. Part of the consultation is separating a medicine-related pause, which needs no alarm, from a cause that does.

Is your amenorrhoea suitable for online assessment?

Usually yes, as a starting point. A video consultation is well suited to taking the history, arranging a pregnancy test and initial bloods, and explaining the likely cause. Where the picture points to primary amenorrhoea, a pituitary cause, early menopause or fertility investigation, the honest next step is a referral. This is the framework our doctors use, aligned with the cited guidance.^[1]

Swipe sideways to compare →

Availability of individual medicines and who may prescribe them vary by country; your doctor confirms what applies where you are.

What the doctor checks in an online amenorrhoea consultation

The consultation is structured to find the cause efficiently, not to reach a verdict from a single symptom. The doctor will typically ask about:

• Your cycle story: when periods started, what was normal for you, when they stopped, and whether they were regular or erratic before that.
• Pregnancy possibility: directly and without embarrassment, because it is tested first regardless of what you expect the answer to be.
• Weight, eating and exercise: recent weight change, training load and any restrictive eating, which point toward a hypothalamic cause.
• Androgen features: acne, excess hair growth and scalp hair thinning, which raise the question of PCOS.^[2]
• Prolactin and pituitary clues: milky nipple discharge, persistent headaches or changes in vision.
• Menopause clues: hot flushes, night sweats and vaginal dryness, especially before age 40.
• Medicines and contraception: anything hormonal, plus other drugs that can affect the cycle.
• Family history: the age relatives reached menopause, and any thyroid or hormonal conditions.

From that history the doctor decides which blood tests genuinely change the plan, commonly a pregnancy test, thyroid function, prolactin, and hormones such as FSH, LH and oestradiol, with others added when the story calls for them.^[1] You take these at a local laboratory, and the doctor reviews the results with you.

When we assess amenorrhoea online, and when we refer you

We treat and assess online: taking the history and arranging a pregnancy test and initial bloods; explaining a likely PCOS, thyroid, weight-related or contraception-related cause; lifestyle advice and, where appropriate, discussing options such as a combined contraceptive pill to regulate cycles or protect the womb lining; and reviewing medicines that may be responsible.

We refer or redirect you: primary amenorrhoea, which needs specialist gynaecology or endocrinology; a suspected raised-prolactin or pituitary cause; premature ovarian insufficiency (periods stopping before around 40), which needs hormone assessment and often hormone replacement guidance; disordered eating or very low weight, where specialist and, where relevant, mental-health support belongs; and fertility investigation when you are trying to conceive.^[3] A positive pregnancy test moves you into pregnancy care rather than this pathway. Amenorrhoea sits within our wider sexual and reproductive health assessments, and where symptoms point elsewhere, such as vaginal thrush or a suspected urinary tract infection, the doctor steers you to the right assessment instead.

Why finding the cause matters

Amenorrhoea is worth taking seriously not because a missed bleed is dangerous in itself, but because of what it can signal. Prolonged low oestrogen, whether from a hypothalamic cause or early menopause, gradually weakens bone and raises the long-term risk of osteoporosis, which is one reason low-weight and athletic amenorrhoea are not simply left alone.^[1][5] In PCOS, very infrequent periods mean the womb lining is not shed regularly, and over years that can matter for the lining's health, so protecting it becomes part of care.^[2] And when absent periods are the visible edge of an eating disorder, a thyroid problem or a pituitary growth, treating the cause helps far more than the periods. Finding the reason is the whole point of the assessment.

Treatment options for amenorrhoea (absent periods)

What you can do yourself

Because amenorrhoea is a sign rather than a disease, self-care depends on the cause. Where low body weight, rapid weight loss or heavy training is the driver, restoring energy balance is the single most effective step, and periods often return once the body reads its circumstances as stable again; support from a professional makes this easier and safer. Reducing sustained stress helps for the same reasons. If you have PCOS, even modest changes to activity and eating can improve cycle regularity, and it is worth knowing this is about hormones and metabolism, not willpower. What no one should do is ignore periods that have stopped for months in the hope they simply restart, because the cause is worth knowing either way.

Prescription treatment after your consultation

A prescription is never issued without a consultation, and for amenorrhoea it follows the cause rather than the symptom. An underactive thyroid is corrected with thyroid hormone, which often restores periods. In PCOS, a combined hormonal contraceptive can regulate bleeding and protect the womb lining when cycles are very infrequent, chosen after the usual suitability checks.^[2] A raised prolactin from a pituitary cause is treated with specific medicines under specialist guidance, and premature ovarian insufficiency is usually managed with hormone replacement to protect bones and manage symptoms, again with specialist input; who initiates and monitors these treatments depends on local regulations and clinical pathways.^[5] There is no single tablet that treats amenorrhoea, and any service implying otherwise is skipping the part that matters, which is finding out why periods stopped.

From the Mobi Doctor podcast

All episodes →

How Mobi Doctor works

1. Book a time that suits you: open daily 7am–11pm, often the same day, with the exact price, €47, shown before you pay.
2. Speak to a licensed doctor about amenorrhoea (absent periods): a private video consultation, from anywhere in Europe, and take a pregnancy test beforehand if you can.
3. Get a clear plan: the tests that matter, an explanation of the likely cause, and treatment or referral as needed. If we can’t help you online, you get a full refund.

Frequently asked questions about amenorrhoea (absent periods)

Related conditions

Thrush UTI (Urinary Tract Infection) All sexual health

From the Mobi Doctor blog

From the Mobi Doctor podcast

All episodes →