PCOS: The Complete Guide to Diagnosis, Treatment, and Actually Feeling Better

You've gained weight and can't lose it no matter what you do. Your periods are irregular or absent. You're growing dark hair in places you'd rather not — chin, upper lip, chest. Your skin breaks out like you're a teenager even though you're 30. You might have been told you have "cysts on your ovaries" after an ultrasound. Or you might have been told everything is fine, despite clearly not feeling fine.

Polycystic ovary syndrome (PCOS) is the most common endocrine disorder in women of reproductive age, affecting approximately 8-13% of women worldwide. Despite its prevalence, it remains one of the most poorly understood, inconsistently diagnosed, and frustratingly undertreated conditions in medicine.

What PCOS Actually Is (and Isn't)

First, the name is misleading. PCOS is not primarily an ovarian condition, and you don't need ovarian cysts to have it. The "cysts" seen on ultrasound are actually small antral follicles — immature eggs that haven't ovulated. They're a consequence of the hormonal dysfunction, not the cause.

PCOS is a metabolic and hormonal disorder with reproductive consequences. The core features are:

• Androgen excess — elevated male hormones (testosterone, DHEA-S, androstenedione) causing acne, hair growth, and hair loss
• Ovulatory dysfunction — irregular or absent periods due to failure to ovulate regularly
• Metabolic dysfunction — insulin resistance, which drives both the hormonal imbalance and long-term health risks

How PCOS Is Diagnosed

The most widely used diagnostic criteria (Rotterdam criteria) require at least two of these three:

1. Oligo-ovulation or anovulation — Irregular periods (cycles longer than 35 days), fewer than 8 periods per year, or no periods at all
2. Clinical or biochemical hyperandrogenism — Visible signs like hirsutism (excess hair), acne, or male-pattern hair thinning; OR elevated androgen levels on blood work
3. Polycystic ovarian morphology — 12 or more antral follicles per ovary or ovarian volume greater than 10 mL on ultrasound

Other conditions that can mimic PCOS must be ruled out: thyroid dysfunction, congenital adrenal hyperplasia, Cushing's syndrome, prolactinoma, and androgen-secreting tumors.

The Insulin Resistance Connection

This is the part that gets overlooked too often. Approximately 70% of women with PCOS have insulin resistance — and this percentage increases with higher BMI, though lean women with PCOS can have insulin resistance too.

Here's how it works: when your cells become resistant to insulin, your pancreas produces more insulin to compensate. Elevated insulin levels stimulate the ovaries to produce excess testosterone. The excess testosterone disrupts ovulation, causes the androgenic symptoms (acne, hair growth, hair loss), and the insulin resistance itself drives weight gain — particularly around the abdomen — creates a pro-inflammatory state, and increases the risk of type 2 diabetes.

This is why metformin works for PCOS. This is why diet and exercise matter. And this is why treating only the surface symptoms (prescribing birth control for irregular periods, spironolactone for acne) without addressing the metabolic root leaves the core problem untreated.

What Your Lab Work Should Include

If you suspect PCOS, a comprehensive evaluation should include:

• Total and free testosterone — the primary androgens to assess
• DHEA-S — adrenal androgen (to rule out adrenal causes)
• 17-hydroxyprogesterone — to rule out congenital adrenal hyperplasia
• TSH — to rule out thyroid dysfunction
• Prolactin — to rule out prolactinoma
• FSH and LH — LH:FSH ratio is often elevated in PCOS (though this is not diagnostic)
• Fasting glucose and insulin — to assess insulin resistance (HOMA-IR calculation)
• Hemoglobin A1c — to screen for prediabetes or diabetes
• Lipid panel — dyslipidemia is common in PCOS
• AMH (anti-Mullerian hormone) — often elevated in PCOS and correlates with disease severity

At CORAL, Dr. Kim orders a complete metabolic and hormonal panel to confirm the diagnosis and identify which PCOS phenotype you have — because treatment should be tailored to your specific presentation.

PCOS Phenotypes

Not all PCOS looks the same. The Rotterdam criteria create four recognized phenotypes:

• Type A (Classic): Hyperandrogenism + ovulatory dysfunction + polycystic ovaries — the full presentation with the highest metabolic risk
• Type B (Classic): Hyperandrogenism + ovulatory dysfunction — no polycystic ovarian morphology but similar metabolic risk
• Type C (Ovulatory): Hyperandrogenism + polycystic ovaries — regular periods, which means this type is often missed
• Type D (Non-hyperandrogenic): Ovulatory dysfunction + polycystic ovaries — no androgen excess, mildest metabolic risk

Your phenotype influences your treatment priorities and long-term monitoring needs.

Treatment: Addressing the Root Causes

Insulin Resistance Management

Metformin remains the most studied insulin sensitizer for PCOS. It lowers insulin levels, can improve ovulation, reduce androgen levels, and may aid weight loss (though modestly). Standard dosing is 1,500-2,000 mg daily (extended-release formulation reduces GI side effects). Benefits typically take 3-6 months to manifest.

Inositol — Myo-inositol and D-chiro-inositol in a 40:1 ratio have shown comparable effectiveness to metformin in some studies for improving insulin sensitivity and ovulation. Available as a supplement, generally well-tolerated.

GLP-1 receptor agonists (semaglutide, liraglutide) — While not FDA-approved specifically for PCOS, these medications address insulin resistance, promote significant weight loss, and are being studied in PCOS. They may be appropriate for PCOS patients with obesity or prediabetes.

Dietary changes — A lower-glycemic-index diet reduces insulin spikes. Focus on whole foods, adequate protein, fiber, and healthy fats. Extreme restriction or very-low-calorie diets can backfire by increasing stress hormones and worsening hormonal imbalance.

Exercise — Both resistance training and aerobic exercise improve insulin sensitivity independent of weight loss. 150 minutes per week of moderate-intensity exercise is the minimum recommendation.

Androgen Excess Management

Spironolactone (50-200 mg daily) — An anti-androgen that blocks testosterone's effects at the receptor level. Effective for hirsutism and acne. Must be used with contraception (category X — causes feminization of male fetuses). Takes 6-12 months for full effect on hair growth.

Combined oral contraceptives — Suppress ovarian androgen production, increase sex hormone-binding globulin (which binds free testosterone), and regulate the menstrual cycle. Pills containing drospirenone or cyproterone acetate have additional anti-androgenic properties.

Topical treatments — Eflornithine cream (Vaniqa) slows facial hair growth. Tretinoin and other acne medications address skin manifestations. These treat symptoms, not causes.

Menstrual Regulation

If you're not trying to conceive, regular withdrawal bleeds are important to prevent endometrial hyperplasia (thickening of the uterine lining from unopposed estrogen). Options include:

• Combined oral contraceptives (preferred — also address androgens)
• Cyclic progesterone (10-14 days per month to induce withdrawal bleeding)
• Levonorgestrel IUD (provides endometrial protection)

Fertility Treatment

If you're trying to conceive:

• Letrozole (Femara) is now first-line for ovulation induction in PCOS — superior to clomiphene in studies, including the landmark PPCOS II trial
• Clomiphene (Clomid) — older option, still effective, but letrozole has higher live birth rates
• Metformin — may be added to letrozole or clomiphene to improve ovulation rates
• Gonadotropins — injectable hormones for ovulation induction when oral medications fail (higher risk of multiple pregnancy)
• IVF — for women who don't respond to ovulation induction, or when other fertility factors are present. Women with PCOS are at higher risk for ovarian hyperstimulation syndrome (OHSS) during IVF.

Long-Term Health Risks

PCOS is not just a reproductive condition. Women with PCOS have increased lifetime risk of:

• Type 2 diabetes — 4-7x higher risk. Screen with fasting glucose and A1c every 1-3 years.
• Gestational diabetes — 3x higher risk during pregnancy
• Cardiovascular disease — Dyslipidemia, hypertension, and chronic inflammation increase risk
• Endometrial cancer — Unopposed estrogen from chronic anovulation increases risk. Regular menstrual regulation is protective.
• Obstructive sleep apnea — 5-30x higher risk, independent of BMI
• Depression and anxiety — 2-3x higher rates, likely from both hormonal effects and the psychosocial burden of symptoms
• Non-alcoholic fatty liver disease — Associated with insulin resistance

These risks are why managing PCOS goes beyond cosmetic concerns. Regular screening and metabolic monitoring are essential.

What to Expect from Treatment

PCOS management is a marathon, not a sprint. Realistic timelines:

• Menstrual regularity — Often improves within 1-3 months of hormonal treatment or metformin
• Acne — 3-6 months to see significant improvement with spironolactone or OCPs
• Hirsutism — 6-12 months minimum (hair growth cycle is slow). Hair removal methods needed in the interim.
• Weight loss — Gradual, with metabolic improvements often preceding significant scale changes
• Insulin resistance — Improves with lifestyle changes and medication but requires ongoing management

Start Getting Answers

If you've been dealing with irregular periods, unexplained weight gain, acne, or excess hair growth and haven't received a clear diagnosis — or if you were diagnosed with PCOS but only given a birth control prescription — it's time for a comprehensive evaluation.

[Schedule a visit at coral.clinic/start](https://coral.clinic/start). Dr. Kim provides thorough PCOS evaluations via telehealth, including a complete hormonal and metabolic workup, individualized treatment planning, and ongoing monitoring. Because PCOS isn't something you just put a Band-Aid on — it's something you manage strategically, with a plan that addresses the root cause.