PCOS in Adolescents: What It Is — and What It Isn’t

Welcome back to the EverAfya blog!

September is PCOS Awareness Month, which makes it the perfect time to talk about a condition that is often misunderstood: polycystic ovary syndrome, or PCOS. Families often arrive in my office worried because a teen has acne, irregular cycles, or an ultrasound report that says “polycystic ovaries.” The truth is, PCOS can be confusing — especially in adolescents — and not every irregular period or ovarian cyst means PCOS.

Today, I want to help clear the air: what PCOS really is, what it isn’t, how it’s diagnosed in teens (which differs from adults), and what the impact can be on health and wellbeing. Most importantly, I want you to know that with the right support, young people with PCOS can and do thrive.

✨ Quick Take:

Polycystic ovary syndrome (PCOS) is one of the most common hormonal conditions, but in adolescents it can be tricky to recognize. In this post, we break down what PCOS really is — and what it isn’t — how diagnosis differs in teens versus adults, the impact on health and wellbeing, and the treatment options that help young people thrive.

What PCOS Is — and What It Isn’t

What PCOS Is:

• A hormonal condition that affects how the ovaries work.
• Characterized by irregular (too frequent, too long, or too few) or absent menstrual cycles, and elevated androgens in the blood (testosterone) or signs of excess androgens (like acne or unwanted hair growth).
• A condition that can affect both reproductive health and overall wellbeing.
• One of the most common hormonal conditions, affecting about 1 in 10 people with ovaries of reproductive age. In adolescents, the numbers are harder to pin down, but studies suggest **3–11% may be affected.**¹ ²

References:

1. ACOG Committee Opinion No. 789. Screening and Management of the Hyperandrogenic Adolescent. Obstet Gynecol. 2019;134(4):e106-e114.
2. Peña AS, et al. Adolescent polycystic ovary syndrome according to the international evidence-based guideline. BMC Med. 2020;18:72.

What PCOS Is Not:

• Not just “cysts on the ovaries.” Despite the name, PCOS doesn’t mean harmful cysts. Many adolescents have ovaries that look “polycystic” or show multiple small follicles on ultrasound, even without PCOS — this is common and often normal.
• Not every irregular period. Cycles are often irregular in the first 1–2 years after the onset of menstruation (menarche) and usually regulate over time. That does not equal PCOS. There are also many other reasons why a teen may have irregular periods, so a full evaluation is important.
• Not the result of something your teen did wrong. PCOS is not caused by lifestyle choices or weight. It occurs in adolescents of all body sizes. Those with higher weight may experience more pronounced symptoms (irregular cycles, acne, hair growth), and adolescents in larger bodies may also be misdiagnosed with PCOS when other causes are present.
• Not a life sentence. With proper support, PCOS can be managed, and teens can live healthy, confident lives.

How PCOS Is Diagnosed in Adolescents

One of the most important points to understand is that PCOS is diagnosed differently in adolescents than in adults.

In adults (Rotterdam criteria): PCOS is diagnosed when two of the following three are present:

1. 1. Irregular or absent menstrual cycles.
   2. Evidence of high androgens (clinical signs like acne/hair growth or elevated testosterone on labs).
   3. Polycystic-appearing ovaries on ultrasound.

In adolescents:

Ultrasound is not reliable, because many normal teens have polycystic-appearing ovaries.

Diagnosis focuses on:

• Persistent irregular cycles (more than two years after periods begin).
• Excess androgen signs such as moderate to severe acne, unwanted hair growth, or elevated testosterone on bloodwork.
  • Sometimes doctors use terms like “at risk for PCOS” or “probable PCOS” if features are present, but it’s too early for a firm diagnosis.

The goal is to avoid labeling too soon while still addressing symptoms and supporting overall health.

The Impact of PCOS in Adolescents

PCOS is more than just a period issue — it can affect multiple aspects of health:

• Metabolic Impact
  Teens with PCOS may have higher risks of insulin resistance, prediabetes, type 2 diabetes, and cholesterol changes. Monitoring and early lifestyle support are important.
• Gynecologic Impact
  Irregular or absent cycles can cause long gaps without periods, sometimes followed by very heavy bleeding. This can be stressful and disruptive. Over time, untreated PCOS can affect future fertility and increase the risk of uterine (endometrial) cancer. As such following with a health provider who understands and can treat PCOS symptoms in adolescents is very important.
• Psychological Impact
  Acne, unwanted hair growth, weight changes, or irregular periods can affect self-esteem. Teens with PCOS may also be more likely to experience anxiety or depression. The emotional toll is real — and deserves as much attention as the physical symptoms.

Treatment Options for Teens with PCOS

The good news is that there are many effective ways to support teens with PCOS. Treatment is always individualized, based on a young person’s needs and goals.

Lifestyle Support:

• • Focus on balanced nutrition, regular movement, and good sleep.
  • Even small changes can improve insulin sensitivity and energy levels.
  • The goal is health and strength — not perfection or a focus on weight alone.
  • Families can support change together. Partnering with an adolescent-centered, culturally aware nutritionist may be especially helpful.

Medications:

Treatment depends on the main concerns — regulating cycles, reducing acne/hair growth, or improving metabolic health. Medication is not a substitute for a balanced lifestyle, but used as a complement.

Gynecologic:

• • Combined hormonal contraceptives (pill, patch, or ring): regulate cycles, reduce acne, and improve unwanted hair growth.
  • Progestin-only therapy, for those who cannot take estrogen, helps protect the uterine lining from chronic buildup that can lead to heavy, prolonged bleeding.

Endocrine:

Metformin: improves insulin resistance and can help regulate cycles.

• • Anti-androgens (like spironolactone): help with acne and hair growth, often used along with contraception.
  • GLP-1 receptor agonists (such as liraglutide, semaglutide): improve insulin sensitivity, support weight management, and may reduce metabolic risks in teens with PCOS who also struggle with obesity or insulin resistance. These are not first-line for all teens but may be considered in consultation with a healthcare provider.

These medications are examples provided for educational purposes only. Always consult your healthcare provider before starting or changing any treatment.

Supportive Care:

• • Dermatology care for acne.
  • Mental health support for anxiety, depression, or body image concerns.
  • Education for both teens and caregivers to reduce myths and stigma.

A Final Word

PCOS in adolescents can be confusing, but it doesn’t have to be overwhelming. With thoughtful evaluation, accurate diagnosis, and a supportive care plan, young people with PCOS can manage their symptoms and thrive.

At EverAfya, we’re here to make reproductive health clearer and more approachable. By understanding what PCOS is — and what it isn’t — families can replace worry with confidence, and stigma with support.

✨ Don’t forget to check out our upcoming Period Toolkit, designed to help teens track cycles and symptoms, prepare for doctor visits, and feel empowered in their care.

—
Dr. Gylynthia “Gyl” Trotman, MD, MPH
Founder, EverAfya

⚠️ Disclaimer: The medications discussed in this post are provided for educational purposes only. They are not recommendations or prescriptions. Every young person is unique, and treatment decisions for PCOS or any health condition should be made in consultation with a qualified healthcare professional who knows your teen’s full medical history. Never start, stop, or change any medication without first speaking to a doctor.