Polycystic Ovary Syndrome

What Is Polycystic Ovary Syndrome?

Polycystic ovary syndrome (PCOS) is a hormonal and metabolic disorder that can affect women during their reproductive years.

The condition is associated with different combinations of ovulatory dysfunction, excess androgen activity and polycystic ovarian morphology.

Ovulatory dysfunction may cause infrequent or unpredictable menstrual periods.

Excess androgen activity may contribute to acne, increased facial or body hair and certain patterns of scalp hair thinning.

PCOS may also be associated with insulin resistance and metabolic abnormalities.

Not every woman with PCOS experiences all these features.

Is PCOS the Same as Having Ovarian Cysts?

No. Despite its name, PCOS is not the same as having pathological ovarian cysts.

The characteristic ultrasound appearance usually reflects numerous small ovarian follicles rather than cysts requiring surgical removal.

Polycystic ovarian morphology may also be seen in women who do not have PCOS.

Conversely, some women meet diagnostic criteria for PCOS without demonstrating this ultrasound appearance.

Therefore, ultrasound findings alone do not establish the diagnosis.

What Causes PCOS?

The exact cause of PCOS is not fully understood.

Current evidence suggests an interaction between genetic, hormonal and metabolic factors.

Hormonal Changes

Increased androgen production or activity can contribute to irregular follicular development and ovulatory dysfunction.

Insulin Resistance

Some women with PCOS have reduced sensitivity to insulin.

Higher circulating insulin levels may contribute to increased ovarian androgen production.

Genetic Factors

PCOS can occur more frequently within families, suggesting a genetic contribution.

Body Weight and Metabolic Factors

Excess body weight can worsen insulin resistance and some symptoms.

However, PCOS also occurs in women with a normal body mass index.

Common Symptoms of PCOS

Irregular Menstrual Periods

Periods may be infrequent, unpredictable or absent for extended intervals because ovulation does not occur regularly.

Excess Facial or Body Hair

Hirsutism refers to increased coarse hair growth in androgen-sensitive areas, such as the chin, upper lip, chest or abdomen.

Acne

Persistent or recurrent acne may be associated with excess androgen activity.

Scalp Hair Thinning

Some women experience female-pattern hair loss.

Difficulty Conceiving

Irregular or absent ovulation may reduce the opportunity for conception during certain cycles.

Metabolic Changes

PCOS may be associated with insulin resistance, impaired glucose tolerance or unfavorable lipid levels.

The severity and combination of symptoms differ between patients.

How Is PCOS Diagnosed?

Diagnosis is based on clinical history, examination and appropriate investigations, after excluding conditions that can cause similar symptoms.

Diagnostic Criteria in Adults

According to international evidence-based recommendations, PCOS is generally diagnosed when at least two of the following three features are present:

1.      Irregular menstrual cycles or ovulatory dysfunction.

2.      Clinical or biochemical hyperandrogenism.

3.      Polycystic ovarian morphology on ultrasound, or appropriately used anti-Müllerian hormone (AMH) testing in adults.

If irregular menstrual cycles and hyperandrogenism are both present, ultrasound may not be necessary for diagnosis.

AMH should not be used as a standalone diagnostic test.

PCOS Diagnosis in Adolescents

Diagnosis in adolescents requires greater caution because irregular cycles and acne can be normal during pubertal development.

Both menstrual irregularity, defined according to years since menarche, and hyperandrogenism are required for diagnosis.

Ultrasound and AMH are not recommended for diagnosing PCOS during adolescence.

Adolescents with suggestive symptoms who do not meet full criteria may require follow-up rather than immediate diagnosis.

Which Tests Are Used to Evaluate PCOS?

Tests are selected according to symptoms and clinical findings.

They may include:

·         Androgen measurements when indicated.

·         Thyroid function assessment.

·         Prolactin testing when appropriate.

·         17-hydroxyprogesterone to exclude selected adrenal disorders.

·         Pregnancy testing when relevant.

·         Glucose metabolism assessment.

·         Lipid profile.

·         Blood pressure measurement.

·         Pelvic ultrasound when needed.

Glucose Testing

A 75-gram oral glucose tolerance test (OGTT) is the most accurate commonly recommended test for assessing glycemic status in women with PCOS, regardless of BMI.

Other tests may be used when an OGTT is not feasible, although they may be less accurate.

Routine measurement of insulin levels is generally not recommended for clinical assessment of insulin resistance in PCOS.

Lifestyle Management for PCOS

Healthy lifestyle measures are an important component of PCOS management for women across weight categories.

Balanced Nutrition

A sustainable, balanced eating pattern supports metabolic health.

No single dietary composition has been shown to be superior for all women with PCOS.

Dietary recommendations should be individualized.

Physical Activity

Regular exercise supports cardiovascular fitness, metabolic health and general well-being.

It may also improve insulin sensitivity and some PCOS-related outcomes.

Weight Management

For women with excess weight, appropriate weight reduction may improve metabolic parameters and menstrual regularity.

However, weight loss is not a universal treatment goal for all patients with PCOS.

Sleep and Psychological Well-Being

Women with PCOS may experience sleep disturbances, anxiety or depressive symptoms.

Addressing these concerns is part of comprehensive care.

Treatment of Irregular Periods in PCOS

Treatment depends partly on whether pregnancy is desired.

Combined Oral Contraceptive Pills

Combined hormonal contraceptives may be used to regulate bleeding and manage hyperandrogenic symptoms in women who are not trying to conceive.

Contraindications, including relevant thrombotic and cardiovascular risks, must be assessed.

Progestogen Treatment

Selected progestogen regimens may be used to protect the endometrium and manage bleeding patterns.

The regimen depends on individual circumstances.

Why Is Endometrial Protection Important?

Prolonged anovulation can expose the uterine lining to estrogen without regular progesterone exposure.

Over time, this can increase the risk of endometrial hyperplasia and endometrial cancer.

This does not mean every woman with PCOS will develop these conditions.

Appropriate cycle management and endometrial protection are important when indicated.

Treatment of Acne and Excess Hair Growth

Hormonal Contraceptives

Combined oral contraceptives may help reduce acne and hirsutism in selected patients.

Anti-Androgen Medication

Medications such as spironolactone may be considered when symptoms remain bothersome despite initial management.

Effective contraception is essential when pregnancy is possible because anti-androgen medication can harm fetal development.

Hair Removal Treatments

Laser hair reduction and other cosmetic hair removal methods may help manage hirsutism.

Some patients benefit from combining medical treatment with hair removal procedures.

Acne Management

Persistent acne may require topical dermatological treatments or other medications according to severity.

Metformin and Insulin Resistance in PCOS

Metformin may be used in selected women with PCOS, particularly when metabolic concerns are present.

It can improve certain glucose and lipid parameters and may influence menstrual regularity in some patients.

However, metformin is not the most effective treatment for every PCOS symptom and should not be viewed as a universal replacement for hormonal treatment or fertility-specific medication.

Common side effects include gastrointestinal discomfort.

Long-term use may also warrant consideration of vitamin B12 monitoring in patients at risk of deficiency.

Does PCOS Cause Infertility?

PCOS can contribute to infertility through irregular or absent ovulation.

However, PCOS does not mean permanent infertility.

Many women with PCOS conceive naturally, while others benefit from ovulation induction or additional fertility treatment.

When conception is delayed, both partners should be evaluated.

Semen analysis, tubal assessment and other investigations may be appropriate because PCOS is not necessarily the only contributing factor.

PCOS Treatment When Pregnancy Is Desired

Treatment depends on age, duration of infertility, ovulatory function and any additional fertility factors.

Letrozole for Ovulation Induction

Letrozole is recommended as the first-line pharmacological ovulation induction treatment for many women with anovulatory infertility associated with PCOS when no other infertility factors are present.

It should be prescribed under medical supervision.

Use for ovulation induction may be off-label in some countries, depending on local regulatory approval.

Pregnancy must be excluded before treatment begins.

Clomiphene Citrate

Clomiphene citrate is another medication used to stimulate ovulation.

Monitoring may be required because of the risk of multiple pregnancy.

Gonadotropin Injections

Injectable gonadotropins may be considered in selected patients who do not respond adequately to oral treatment.

Careful ultrasound monitoring is important to reduce the risk of multiple pregnancy and ovarian hyperstimulation syndrome.

IUI and IVF for Women With PCOS

Intrauterine Insemination (IUI)

IUI may be considered in selected couples depending on the overall fertility evaluation.

It is not automatically required for every woman with PCOS.

In Vitro Fertilization (IVF)

IVF may be appropriate when other treatments have not been successful or additional fertility factors are present.

Women with PCOS may have a higher ovarian response to stimulation, increasing the risk of ovarian hyperstimulation syndrome (OHSS).

Individualized stimulation protocols and appropriate preventive strategies can help reduce this risk.

Is Surgery Necessary for PCOS?

Surgery is not routinely required to treat PCOS.

Laparoscopic ovarian drilling may be considered in selected cases of anovulatory infertility when appropriate medication-based treatments have not worked or are unsuitable.

However, it is generally not a first-line treatment.

Potential risks include adhesions and possible effects on ovarian reserve.

Surgery should not be performed simply because an ultrasound shows polycystic ovarian morphology.

PCOS in Adolescents

Diagnosing PCOS during adolescence can be challenging.

Irregular menstrual cycles and acne may be common during normal pubertal development.

Age-appropriate diagnostic criteria should therefore be applied.

Adolescents who have symptoms but do not meet full criteria may be considered at increased risk and reassessed over time.

Treatment focuses on symptom relief, metabolic health and psychological well-being while avoiding unnecessary interventions.

Long-Term Health Risks Associated With PCOS

PCOS is associated with an increased likelihood of certain conditions, including:

·         Impaired glucose tolerance and type 2 diabetes.

·         Hypertension.

·         Dyslipidemia.

·         Obstructive sleep apnea.

·         Endometrial hyperplasia and, in some cases, endometrial cancer.

·         Anxiety and depressive symptoms.

These associations do not mean every woman with PCOS will develop these conditions.

Regular assessment helps identify and manage risks.

Follow-Up and Long-Term PCOS Management

PCOS management often changes throughout a woman's life.

Follow-up may include menstrual cycle review, assessment of androgen-related symptoms, blood pressure, glucose and lipid testing, psychological health and fertility goals.

Treatment may need to be adjusted when reproductive plans change.

For example, a patient initially receiving hormonal contraception for menstrual regulation may later require ovulation induction when planning pregnancy.

Frequently Asked Questions

Can PCOS be cured permanently?

There is currently no single treatment that permanently eliminates PCOS, but symptoms and associated health risks can often be managed effectively.

Does PCOS always prevent pregnancy?

No. Many women with PCOS conceive naturally or with appropriate fertility treatment.

Is weight loss necessary for every woman with PCOS?

No. Weight management can be helpful when excess weight is present, but PCOS also occurs in women with a normal BMI.

Should everyone with PCOS take metformin?

No. Metformin is used selectively, particularly for metabolic indications, and should be prescribed according to individual assessment.

Can PCOS be diagnosed by ultrasound alone?

No. Polycystic ovarian morphology alone is insufficient for diagnosis.

What is the preferred fertility treatment for PCOS?

For many women with anovulatory PCOS and no other infertility factors, letrozole is the preferred first-line medication for ovulation induction under medical supervision.

Does PCOS increase diabetes risk?

Yes. PCOS is associated with an increased risk of impaired glucose regulation and type 2 diabetes, making metabolic screening important.

Individualized PCOS Care

Effective polycystic ovary syndrome treatment begins with identifying the symptoms and health concerns that matter most to each patient.

For some women, the priority is menstrual regulation or treatment of acne and excess hair growth. Others require metabolic management or support with ovulation and fertility.

A gynecological evaluation can help confirm the diagnosis, exclude other causes and develop a treatment plan that addresses reproductive, hormonal and long-term health.

Medical disclaimer: Responses to PCOS treatment vary between individuals. Hormonal medications and ovulation induction drugs should be used under medical supervision. Results of surgical and interventional procedures may also vary from person to person, and detailed medical consultation is recommended before treatment.