PCOS is the commonest reason for irregular periods and difficulty conceiving — and one of the most treatable, because most women with PCOS conceive without ever needing IVF.
Polycystic ovary syndrome is the most common hormonal condition in women of reproductive age, and in an OPD like ours it is the single most frequent reason a young woman is sent for a fertility opinion. It is also the condition most often misunderstood — by the women who have it, and sometimes by the reports they arrive holding.
Two things are worth saying at the start. PCOS is not a disease of the ovaries alone; it is a hormonal and metabolic pattern that happens to show up in the ovaries. And a diagnosis of PCOS is not a diagnosis of infertility. It usually means ovulation is irregular, which is a problem with timing rather than with capacity — and timing is something medicine handles reasonably well.
What PCOS actually is
In PCOS, the ovary contains a larger-than-usual number of small follicles that begin to develop but stall before one becomes dominant. Without a dominant follicle there is no ovulation, and without ovulation there is no period at the expected time and no egg available for fertilisation. Behind this sits some combination of higher androgen (male hormone) activity and, in many women, insulin resistance — the body producing more insulin than it should need, which in turn pushes the ovary to make more androgen.
The name is unhelpful. Those “cysts” on a scan report are not cysts in the sense most patients fear. They are ordinary immature follicles, present in larger numbers. Nothing is being removed, and nothing is bursting.
Prevalence is high everywhere. The 2023 international guideline puts it at 10–13% of women of reproductive age worldwide. Indian community studies, summarised in the Indian Journal of Medical Research, report a range of 3.7% to 22.5% depending on the criteria used and the population studied — a spread that says more about how PCOS is defined than about Indian women being different.
How the diagnosis is made
PCOS is diagnosed when two of the following three are present, and other causes have been excluded:
| Feature | What it means in practice |
|---|---|
| Irregular or absent ovulation | Cycles longer than 35 days, fewer than eight periods a year, or long gaps |
| Clinical or biochemical hyperandrogenism | Excess hair growth, persistent acne, hair thinning — or a raised testosterone on blood testing |
| Polycystic ovarian morphology | 20 or more follicles in at least one ovary on a modern transvaginal scan, or ovarian volume of 10 ml or more |
Three points from the 2023 guideline change how we work day to day. First, if a woman has both irregular cycles and hyperandrogenism, an ultrasound is not needed to make the diagnosis. Second, AMH can be used in adults as an alternative to counting follicles on a scan — though never as a test on its own. Third, the diagnosis should not be made in adolescents within about eight years of their first period; irregular cycles are normal in that window, and labelling a fifteen-year-old with PCOS causes a great deal of unnecessary fear.
Before treatment we exclude thyroid disease, raised prolactin and, where the picture warrants it, non-classical adrenal hyperplasia, because all three imitate PCOS and none of them is treated the same way.
On ultrasound: prenatal sex determination is not done at this hospital and is prohibited by law under the PC&PNDT Act, 1994. Scans described here are gynaecological scans used to assess the ovaries and uterus.
Why PCOS makes conception harder — and why it is treatable
In most women with PCOS the eggs are fine and the tubes are fine. What is missing is a predictable ovulation. That is why treatment is built in steps, and why the first steps are simple. Age still matters in PCOS as it does in everyone, so the steps should move at a reasonable pace rather than being repeated for years.
Step 1 — Weight, insulin and the unglamorous part
Where there is excess weight, a loss of 5–10% of body weight restores ovulation in a substantial proportion of women, often before any drug is started. This is the least popular paragraph in any PCOS consultation and the most effective one. Metformin has a place, particularly where there are metabolic features or where the woman is being prepared for further treatment, but it is an adjunct rather than a primary fertility drug.
Step 2 — Ovulation induction
If ovulation does not resume, tablets are the next step. Letrozole is now first-line ahead of clomiphene citrate, and there is a good trial behind that.
| Letrozole | Clomiphene citrate | |
|---|---|---|
| Cumulative live birth, up to 5 treatment cycles (women with PCOS aged 18–40, Legro et al., NEJM 2014, n=750) |
27.5% | 19.1% |
| Ovulation rate in the same trial | 61.7% | 48.3% |
| Twin pregnancies among live births | 3.4% | 7.4% |
| Effect on endometrium | Generally favourable | Can thin the lining |
Cycles are monitored on scan so that the dose can be adjusted and the timing given properly. If tablets alone do not work, low-dose injectable gonadotropins are the next option — used carefully, because a PCOS ovary responds strongly and multiple pregnancy is a real risk. Laparoscopic ovarian drilling remains a reasonable second-line choice in selected women who have not responded to tablets.
Step 3 — IUI
Where ovulation has been achieved, the tubes are open and the semen parameters are adequate, IUI is often combined with ovulation induction. Our fuller comparison of when IUI is worth trying and when it is not applies directly to PCOS.
Step 4 — IVF, when it is genuinely needed
IVF is not the first answer in PCOS. It becomes the right answer when there is a second factor — blocked tubes, significant male factor, or a run of failed ovulation induction and IUI cycles. Our guide to deciding whether you actually need IVF and the step-by-step account of an IVF cycle cover what that involves.
Two things are handled differently in a PCOS IVF cycle. The ovary over-responds, so the risk of ovarian hyperstimulation syndrome is higher — which is why an antagonist protocol with an agonist trigger is usually chosen. And freezing all the embryos for transfer in a later cycle has been shown to help this specific group: in a trial of 1,508 women with PCOS aged 20–35 undergoing their first IVF cycle, live birth after the first transfer was 49.3% with frozen embryos against 42.0% with fresh, and moderate or severe OHSS occurred in 1.3% against 7.1% (Chen et al., NEJM 2016). The same trial found a higher rate of pre-eclampsia in the frozen group, which is a reason to plan the pregnancy carefully rather than a reason to avoid freezing.
What PCOS does not mean
- It does not mean you cannot conceive naturally. Many women with PCOS conceive without any treatment, particularly after weight and insulin are addressed.
- It does not mean surgery. The follicles seen on scan are not removed.
- It does not go away with one course of tablets. PCOS is managed, not cured — and management continues after the baby.
- It is not only a fertility problem. Long gaps without periods leave the uterine lining unopposed by progesterone, which matters over years; and the insulin resistance behind PCOS raises the long-term risk of type 2 diabetes. Both are reasons to stay under review even when you are not trying to conceive.
At Cosmic
PCOS is assessed here in one visit wherever possible: history, examination, a gynaecological scan and the blood tests that exclude thyroid, prolactin and adrenal causes. Fertility treatment for PCOS is led by Dr. Bhargavi Khatri, who heads the IVF programme, with ovulation induction cycles monitored on scan rather than prescribed blind. The hospital is a registered Level 2 ART clinic (Certificate No. GS/AHD/165) under the ART (Regulation) Act, 2021. If your cycles are irregular and you have been trying for a year — or six months if you are over 35 — that is the point to have it looked at properly.
Book a consultation
Cosmic Women’s Hospital & IVF Center, 3rd Floor, The Capital Corporate, Nr. Naroda Muktidham, Naroda, Ahmedabad – 382330. Call 77-9383-9383 or write to contact@cosmichospital.in. OPD 10am to 8pm.
Sources
- Teede HJ, Tay CT, Laven JJE, et al. Recommendations from the 2023 International Evidence-based Guideline for the Assessment and Management of Polycystic Ovary Syndrome. J Clin Endocrinol Metab. 2023;108(10):2447–2469.
- Legro RS, Brzyski RG, Diamond MP, et al. Letrozole versus clomiphene for infertility in the polycystic ovary syndrome. N Engl J Med. 2014;371(2):119–129.
- Chen ZJ, Shi Y, Sun Y, et al. Fresh versus frozen embryos for infertility in the polycystic ovary syndrome. N Engl J Med. 2016;375(6):523–533.
- Ganie MA, Vasudevan V, Wani IA, et al. Epidemiology, pathogenesis, genetics & management of polycystic ovary syndrome in India. Indian J Med Res. 2019;150(4):333–344.
This article is general information about a medical condition and is not a substitute for individual consultation. Treatment is decided case by case.
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Cosmic Women's Hospital
Cosmic Women’s Hospital & IVF Center is a registered Level 2 ART clinic in Naroda, Ahmedabad — obstetrics, gynaecological surgery, IVF and ICSI, with ultrasound in-house and 24-hour emergency obstetric cover. Articles here are written by the clinical team and medically reviewed by Dr. Rahul Khatri or Dr. Bhargavi Khatri before publication.
