Fertility treatment options for ovulatory disorders by Dr Kausar Jabeen

When we talk about what can affect a person’s ability to conceive, ovulation is often at the heart of the conversation. For a pregnancy to occur, an egg must be released from the ovary, travel along the fallopian tube, and be fertilised by sperm. Without regular, healthy ovulation, that process simply cannot happen. Yet for a significant number of women, ovulation is either absent, irregular, or disrupted in some way and this is referred to as an ovulatory disorder. 

Ovulatory disorders are one of the most common causes of female infertility, yet they are also among the most treatable. The key lies in understanding what type of ovulatory disorder is involved, because the right approach to treatment depends entirely on the underlying cause. 

In this article, we want to walk you through what ovulatory disorders are, how they are diagnosed, and what treatment options are available, with the aim of helping you feel more informed and less overwhelmed as you navigate your fertility journey. 

What is an ovulatory disorder? 

Ovulation is governed by a carefully co-ordinated hormonal conversation between the brain and the ovaries, involving the hypothalamus, the pituitary gland, and the ovaries. When any part of that system is disrupted, ovulation can become irregular or stop altogether. 

Ovulatory disorders sit on a spectrum. At one end is anovulation, where ovulation does not happen at all. At the other end are more subtle disruptions, where ovulation occurs but inconsistently or in a way that makes conception difficult. Both ends of this spectrum can affect fertility. 

To understand the treatment options available, it helps to know which group an ovulatory disorder falls into. 

Group I — Hypothalamic or pituitary dysfunction: The brain is not sending the right signals to the ovaries. Hormone levels are typically low, and oestrogen production is insufficient. Causes include extreme weight loss, over-exercising, significant stress, or problems with the pituitary gland. 

Group II — Ovarian dysfunction (including PMOS): This is the most common group, where the ovaries receive signals from the brain but do not respond in a normal, predictable way. 

Group III — Ovarian insufficiency (including POI): The ovaries have a significantly reduced or absent reserve of eggs, often associated with elevated FSH levels. 

It is also worth noting that other conditions such as thyroid disorders or elevated prolactin levels can disrupt ovulation as a secondary effect, and these need to be identified and treated accordingly. 

What are the signs that ovulation may be affected?  

Ovulatory disorders do not always announce themselves obviously, which is one reason they can go unnoticed. However, there might be signs worth investigating: 

• Irregular periods, or cycles that vary considerably in length from month to month 

• Absent periods, either for the first time or after they have previously been regular 

• Very infrequent periods (fewer than eight cycles per year) 

• Other hormonal symptoms such as acne, excess hair growth, very heavy periods, or unexplained weight changes, which may suggest an imbalance 

None of these symptoms on their own confirms an ovulatory disorder, but they are good reasons to seek a professional assessment, particularly if you have been trying to conceive for some time without success. 

How is an ovulatory disorder diagnosed? 

Diagnosis begins with a conversation, your doctor will want to understand your medical and menstrual history, any relevant symptoms, and your lifestyle. From there, a combination of blood tests and ultrasounds helps to build a clearer picture. 

Key investigations typically include, but are not limited to: 

• Mid-luteal progesterone: A blood test taken around seven days before an expected period to confirm whether ovulation has occurred. 

• FSH (follicle-stimulating hormone) and LH (luteinising hormone): Measured early in the menstrual cycle to assess how the pituitary gland is communicating with the ovaries. 

• AMH (anti-Müllerian hormone): A marker of ovarian reserve, which reflects how many eggs remain available in the ovaries, although it does not reliably predict natural fertility and should be interpreted alongside other clinical findings. 

• Prolactin and thyroid function: To rule out other hormonal conditions that can disrupt ovulation. 

• Transvaginal ultrasound: To assess the ovaries and evaluate the uterus and reproductive organs. 

Together, these investigations allow your fertility specialist to pinpoint the type of ovulatory disorder you may have and, crucially, to identify the most appropriate treatment pathway. 

Treatment options 

There is no single treatment for ovulatory disorders. What works well for one person may be entirely inappropriate for another. The right approach is shaped by the underlying cause, your overall health, how long you have been trying to conceive, and your own preferences and circumstances. 

1. Lifestyle and weight management 

For some women, changes to lifestyle can make a meaningful difference to ovulation without any medication at all. In Group I disorders where ovulation has been disrupted by significant weight loss, excessive exercise, or ongoing psychological stress, restoring a healthy body weight and addressing the underlying cause can, in some cases, allow the menstrual cycle and ovulation to return naturally. 

Similarly, for women with polycystic metabolic ovulatory syndrome (PMOS, previously known as PCOS) who are carrying excess weight, even modest weight loss has been shown to improve ovulatory function and increase the chances of natural conception. 

2. Ovulation induction with medication 

When lifestyle changes alone are not sufficient, or where the cause of ovulatory dysfunction is primarily hormonal rather than lifestyle-related, medication to stimulate ovulation is usually the next step. 

Letrozole 

Letrozole is the preferred first-line oral medication for ovulation induction in women with PMOS. Letrozole works by temporarily reducing oestrogen levels, which prompts the pituitary gland to release more FSH and stimulate follicle development.  

Clomifene 

Clomifene remains a widely used option, particularly where letrozole is not available or suitable. It works by blocking oestrogen receptors in the hypothalamus, triggering a hormonal cascade that stimulates the ovaries. It may be used alongside metformin in women with PMOS who have insulin resistance, where the combination has been shown to improve outcomes. 

Gonadotrophins 

Injectable gonadotrophins are typically used when oral medications have not resulted in ovulation or pregnancy after several treatment cycles. They involve self-administered injections of FSH (and sometimes LH), which directly stimulate follicle development in the ovaries. Because they are more potent, they require close monitoring through blood tests and ultrasounds to minimise the risk of ovarian hyperstimulation syndrome (OHSS). 

3. Laparoscopic ovarian surgery 

Laparoscopic ovarian surgery is a minimally invasive keyhole procedure that involves making small punctures in the outer surface of the ovary to reduce the production of androgens (male hormones), which can in turn restore more regular ovulation. 

It is not suitable for all patients and would only be recommended in carefully selected cases where other treatments have been tried. 

4. Assisted reproductive conception 

IVF becomes the recommended route when other treatment options have not resulted in restoring ovulation or pregnancy, or where there are additional factors such as a problem with the fallopian tubes or a male factor infertility. 

In IVF, the ovaries are stimulated with injectable hormones to produce several eggs in one cycle. Those eggs are then collected from the ovaries, fertilised in the laboratory, and the resulting embryo (or embryos) transferred to the uterus.  

5. The role of egg donation 

For women with very low ovarian reserve or follicles are not responding to stimulation, achieving a pregnancy using your own eggs becomes considerably more challenging. In this situation, IVF using donated eggs is often the most effective route to parenthood.  

For anyone considering donor conception, we understand there is a great deal to process emotionally as well as practically. We have lots of information available here, and our teams can talk you through your options at your own pace. 

When should I seek help? 

If your periods are irregular, infrequent, or have stopped, we would encourage you to speak with a doctor sooner rather than later, even if you are not yet actively trying to conceive. Getting an early picture of your hormonal health means that if treatment is needed, it can be started without delay. 

If you have regular cycles but have been trying to conceive for 12 months without success (or six months if you are over 35), a fertility assessment is recommended. This will include an investigation of your ovulatory function as a core part of the assessment. 

A note from me 

Receiving a diagnosis of an ovulatory disorder can be a lot to take in. But it is worth knowing that for many people, ovulatory disorders are among the most responsive to treatment of all causes of infertility. With the right diagnosis, a tailored plan, and the right support, there is a very real chance of achieving the pregnancy you are hoping for. 

At TFP Fertility, we take the time to understand your individual situation and ensure that any treatment we recommend is the right one for you. If you have questions about ovulation or fertility treatment, please do not hesitate to get in touch.