PCOS and Endometriosis

Polycystic Ovary Syndrome (PCOS) and endometriosis are two of the most common reproductive health conditions affecting women today. For women experiencing infertility, the likelihood of having endometriosis can be as high as 50%, while up to 70% of women with PCOS worldwide are unaware of their condition.

Globally, PCOS affects an estimated 10–13% of women of reproductive age, while endometriosis affects about 1 in 10 women and girls of reproductive age (around 190 million).

While each condition has unique challenges and symptoms, both significantly affect menstrual health, fertility, and wellbeing. 

Despite their prevalence, they’re often misunderstood or misdiagnosed, leaving many searching for answers and treatment. This guide compares endometriosis and PCOS, reviews the research, and offers advice on managing symptoms or seeking a diagnosis. 

What Are PCOS and Endometriosis?

Living with PCOS or endometriosis can be tough, but there are effective ways to relieve symptoms and improve your quality of life. Having insights into these conditions can give you the upper hand in achieving better health.

Tracking your menstrual cycle can help identify patterns that may indicate underlying issues. Hormone-tracking tools like the Mira Monitor, Wands, and the Mira App can offer insights into your menstrual cycle and ovulation, even if your cycle is irregular. 

Before exploring symptoms of PCOS and endometriosis, it’s vital to understand what these conditions are. Despite both impacting the reproductive system and causing similar issues, they differ in causes, treatment, and effects.

What Is PCOS?

PCOS is primarily a hormonal and metabolic disorder. It is characterized by an excess of androgens (male sex hormones like testosterone), insulin resistance, and ovulatory dysfunction.

A common misconception is about the "cysts" in the name. In PCOS, the ovaries develop many small fluid-filled sacs, which are actually immature egg follicles but not true cysts, that build up because ovulation isn't occurring regularly.

PCOS can be notoriously hard to diagnose because symptoms vary so widely. The Panorama Lab Test is an easy-to-use but advanced diagnostic tool that measures key hormones: AMH, TSH, free T4 (fT4), prolactin, free testosterone, total testosterone, SHBG, and albumin. You will get a comprehensive overview of your hormonal health, offering crucial data points for you and your doctor to support the diagnostic process for PCOS.

Go to the lab—without actually going

Test your 5 essential fertility biomarkers & get 5 personalized reports from home.

Try Now

Causes of PCOS

PCOS has a significant genetic component, but environmental factors also influence it. Some studies, like one conducted by Obstetrics and Gynecology Hospital of Shaoxing University, suggest associations with genes related to androgen production, insulin signaling, and chronic inflammation. One of the main problems is a hormonal imbalance. Women with PCOS usually have higher levels of androgens, hormones typically associated with males.

While the exact cause is unknown, several factors play a role:

• Insulin Resistance: High insulin levels can trigger the ovaries to produce more androgens.

• Hormonal Imbalance: Specifically elevated luteinizing hormone (LH) and androgens.

• Low-Grade Inflammation: This stimulates polycystic ovaries to produce androgens.

• Genetic Factors: You are more likely to have it if your mother or sister does.

What Is Endometriosis?

Endometriosis is a condition in which tissue similar to the lining of your uterus (the endometrium) develops in patches outside the uterus where it's not supposed to be. The displaced tissue can grow and attach to various organs in the pelvic area, such as the ovaries, fallopian tubes, and the membrane that covers pelvic organs. In less common cases, it can even grow around the intestines, bladder, rectum, cervix, vagina, and vulva.

Unlike the uterine lining, which sheds during your period, this misplaced tissue has nowhere to go, causing chronic inflammation, scar tissue (adhesions), and severe pain. This can lead to a range of symptoms that go beyond typical period pain.

Causes of Endometriosis

While the exact causes of endometriosis are still being researched, immune factors and potential genetic predispositions may play a role. Here are the main theories being researched as the causes: 

• Retrograde Menstruation: When menstrual blood flows backward through the fallopian tubes into the pelvic cavity.

• Immune System Dysfunction: The body fails to recognize and destroy the misplaced endometrial-like tissue.

• Genetic Predisposition: It often runs in families.

• Surgical Transplantation: Rarely, endometrial cells may attach to a surgical incision (e.g., after a C-section).

Research, posted by Yale Medicine, suggests that the inflammation associated with endometriosis isn't just localized; it can involve your body's immune system, potentially leading to wider effects. Tiny microRNAs, which influence how our genes are expressed, also appear to behave differently in women with endometriosis.

Endometriosis vs PCOS

PCOS and endometriosis are two common but very different conditions that affect the reproductive system. Both can cause symptoms like pelvic pain and irregular periods, and may make it harder to get pregnant. However, they have different causes, symptoms, and treatment options. 

Here is a quick breakdown of endometriosis vs PCOS:

Are PCOS and Endometriosis the Same Thing? 

No. Despite the confusion, these are completely different conditions. You can have similar period problems, but the mechanisms driving them are distinct. PCOS is largely defined by hormonal imbalances affecting ovulation and metabolism. Endometriosis is characterized by the growth of tissue that causes inflammation and pain.

PCOS vs Endometriosis Symptoms

PCOS disrupts how your ovaries function hormonally, while endometriosis involves physical tissue growing where it shouldn't. So, when trying to determine the difference between PCOS and endometriosis, symptoms are the biggest clue. However, there is significant overlap, which is why patients often mistake one for the other.

Shared Symptoms

Endometriosis and PCOS are different conditions, but they share some symptoms. This overlap can make it hard to determine which condition you have or if you have both. Here are some symptoms that can appear in both:

• Irregular or missed periods (more common in PCOS, but can happen in endo)

• Pelvic pain

• Digestive discomfort (bloating, nausea)

• Fertility struggles (difficulty conceiving)

• Fatigue

• Bloating (endo vs PCOS)

PCOS Symptoms 

PCOS comes with a range of symptoms and potential risks. It's a leading cause of infertility and can increase your risk of serious long-term health issues, including type 2 diabetes, heart disease, obesity, depression, and endometrial cancer.

PCOS symptoms are often systemic and visible:

• Hyperandrogenism: Excess facial or body hair (hirsutism) and thinning scalp hair.

• Skin Issues: Hormonal acne and oily skin.

• Metabolic Risks: Weight gain (especially around the abdomen) and difficulty losing weight due to insulin resistance.

• Irregular Ovulation: Long cycles (over 35 days) or no periods at all.

Dealing with the symptoms of PCOS or endometriosis can be difficult, and finding the proper support is key to feeling better. To effectively manage these conditions and reduce long-term health risks, you can work with a hormone health expert who provides comprehensive support tailored to your needs.

Endometriosis Symptoms 

What does endometriosis feel like? A common sign is pelvic pain with menstrual changes, but symptoms vary based on tissue location and depth. Endometriosis can also cause vague symptoms that are primarily pain-based:

• Severe Period Pain (Dysmenorrhea): Cramps that prevent daily activities.

• Dyspareunia: Deep pain during or after sex.

• Painful Elimination: Pain with bowel movements or urination, especially during menstruation.

• Heavy Bleeding: Excessively heavy periods (menorrhagia) or bleeding between periods.

• Cyclic Digestive Issues: Diarrhea, constipation, or nausea coinciding with your period.

Endo Belly vs PCOS belly

This is a frequently searched comparison criterion: “PCOS vs endo belly.” While both involve abdominal distension, the causes differ. The PCOS belly is typically associated with visceral fat accumulation, driven by insulin resistance and elevated cortisol. It is often firmer and associated with general weight gain.

Meanwhile, the endo belly is caused by severe inflammation, fluid retention, and digestive distress. A woman might wake up with a flat stomach and look six months pregnant by the evening due to severe bloating, regardless of her body weight.

Can You Have PCOS and Endometriosis?

Yes, research, conducted by specialists from Greenville Hospital System, shows it is absolutely possible to have polycystic ovary syndrome and endometriosis at the same time. If you suspect you have both, working with a specialist is crucial to protect your fertility. 

When these conditions coexist, the symptoms can compound, leading to severe pain and irregular cycles. This often leads to misdiagnosis; for example, a doctor might treat the PCOS (irregular periods) but miss the silent endometriosis, causing the inflammation.

How PCOS Affects Fertility and Overall Health

The primary issue is anovulation, the failure to release an egg. Without an egg, fertilization cannot happen. Additionally, the metabolic aspects of PCOS (like high insulin) can affect egg quality and increase the risk of miscarriage.

Beyond fertility, untreated PCOS increases long-term risks for type 2 diabetes, cardiovascular disease, and endometrial cancer (due to the uterine lining building up without shedding).

PCOS and its impact on fertility can be overwhelming, but there are several solutions. Tools such as the Mira Monitor, Wands, BBT, and Mira App provide hormone-tracking insights into your ovulation patterns and menstrual cycle.

Nutritional support with the PCOS Supplements can help balance hormones, improve insulin sensitivity, and reduce symptoms associated with PCOS. These contain myo-inositol, D-chiro inositol, folate, and vitamin D.

Using hormone tracking combined with metabolic support can help manage symptoms effectively. These tools are valuable options that provide useful insights and support for those dealing with PCOS and fertility issues.

How Endometriosis Affects Fertility and Overall Health

Endometriosis affects fertility differently. While some women with mild endometriosis conceive naturally, severe cases can distort pelvic anatomy, blocking fallopian tubes or damaging the ovaries. It is commonly associated with autoimmune diseases and slightly higher risks of certain ovarian cancers. Long-term health risks include chronic pain syndromes. High levels of inflammation can also create a hostile environment for egg and sperm, thereby impacting implantation.

Most often, endometriosis can be successfully treated, leading to symptom improvement and a better chance of conception. Since inflammation impacts egg quality and implantation, supportive care is vital. Mira’s fertility specialists can guide you through anti-inflammatory lifestyle changes.

Also, prenatal vitamins help prepare your body for conception and ensure you fill nutritional gaps essential to conception. These also support egg quality and promote overall cycle regularity, which is particularly important for individuals with endometriosis.

Is PCOS or Endometriosis Worse for Fertility?

There is no simple answer to which is “worse” when it comes to PCOS vs endometriosis. It depends on severity. PCOS is often considered "easier" to treat in terms of fertility because medications (like Clomid or Letrozole) can often successfully induce ovulation.

Endometriosis can be more complex, especially if fallopian tubes are blocked or if ovarian reserve is damaged by cysts (endometriomas) or surgery. However, both are highly treatable, and many women with either (or both) go on to have healthy pregnancies.

How to Get Diagnosed: PCOS vs. Endometriosis

When dealing with “endo vs PCOS,” getting a diagnosis is the first step to relief and involves differentiating between symptoms. Unfortunately, women wait an average of 2 years for a PCOS diagnosis and 7-10 years for an endometriosis diagnosis. 

PCOS Diagnosis

At its core, PCOS is a hormonal, metabolic, and inflammatory condition. Doctors typically use the "Rotterdam Criteria," requiring two out of three of the following:

1. Irregular or absent ovulation (often seen as irregular or missing periods).

2. Clinical or laboratory evidence of androgens (shown via blood test or physical signs like acne/hirsutism).

3. Polycystic ovaries visible on an ultrasound. Note: You do not need ultrasound cysts to have PCOS.

Beyond these hallmark signs, additional symptoms may also develop. PCOS signs and symptoms are typically more severe in people with obesity.

Endometriosis Diagnosis

This is trickier. Endometriosis diagnosis starts with discussing symptoms (heavy periods, pelvic pain, pain with sex/bowel movements) and a pelvic exam. Tools used in diagnosis include: 

• Laparoscopy: The only definitive way to diagnose endometriosis is through a minimally invasive surgery where a doctor looks inside the abdomen and biopsies the tissue.

• Ultrasound/MRI: Can identify large cysts (endometriomas) but often misses smaller lesions. A "normal" ultrasound does not rule out endometriosis.

Diagnostic Comparison: PCOS vs. Endometriosis

Treatment for PCOS and Endometriosis

When you’re facing the pain of endometriosis or PCOS, having relief methods can help you feel better and stay calm during challenging times. To reduce discomfort, you can use helpful strategies to handle sudden PCOS or endometriosis symptoms. 

If you are struggling with PCOS or endometriosis, you don't have to be in limbo. Our fertility experts can help you create a personalized strategy that includes adaptive solutions to manage symptoms and optimize fertility.

PCOS Treatment Options

Treatment for PCOS generally focuses on managing your specific concerns. Current guidelines prioritize a personalized approach. Treatment usually includes the following:

• Lifestyle: Diet changes to manage insulin resistance (low glycemic index diet), regular exercise, and stress management.

• Medications: Metformin (for insulin), birth control pills (to regulate cycles), and anti-androgens (for acne/hair growth).

• Fertility: Ovulation induction medication (Letrozole/Clomid) or IVF/IUI if needed.

Endometriosis Treatment Options

Endometriosis impacts fertility by causing inflammation, hormonal imbalances, or scarring that may interfere with ovulation or block fallopian tubes. However, several treatment options have helped many women with endometriosis conceive successfully.

• Pain Management: NSAIDs for inflammation.

• Hormonal Suppression: Birth control pills, patches, or hormonal IUDs to reduce period frequency and flow.

• GnRH Agonists: Drugs that put the body into temporary menopause to shrink tissue.

• Surgery: Laparoscopic excision surgery to remove the tissue is the gold standard for pain relief and improving fertility.

• Hysterectomy: Considered a last resort for severe pain, though it is not a guaranteed cure if tissue remains elsewhere.

When to See a Doctor for PCOS or Endometriosis Symptoms

There is symptom overlap between PCOS, endometriosis, and pelvic inflammatory disease (PID). So getting a diagnosis can sometimes feel like a winding road, as symptoms can be frequently misdiagnosed for various reasons, such as a lack of awareness, delayed diagnosis, and varying sensations from person to person.

However, early intervention prevents long-term complications. Don't let pain be your "normal." Describing your specific pain experience to your healthcare provider is crucial for diagnosis and management. 

See your health care provider if you're worried about your periods, if you're having trouble getting pregnant, or if you have signs of excess androgen. You should also seek medical advice if:

• Your periods are consistently irregular, absent, or fewer than 9 times a year.

• Period pain disrupts your life (missing work/school) or isn't relieved by over-the-counter meds.

• You have been trying to conceive for 6–12 months without success.

• You experience pain during sex or bowel movements.

Conclusion

PCOS is primarily a hormonal and metabolic disorder characterized by androgen excess and insulin resistance, whereas endometriosis is an inflammatory condition where tissue similar to the uterine lining grows outside the uterus. 

Despite their prevalence and shared symptoms like pelvic pain and fertility struggles, the difference between endometriosis and PCOS requires distinct diagnostic approaches and treatments due to their unique biological drivers. 

Solutions are available for these common reproductive health conditions, so you can proactively manage them and seek professional guidance. From the clarity offered by the Panorama Lab Test to the daily insights of the Mira App, you have tools to take charge of your reproductive health.

Frequently Asked Questions

Can PCOS cause endometriosis?

No, PCOS does not cause endometriosis. They are separate conditions with different causes. However, because they are both common, it is possible to have both at the same time.

What are the chances of a woman having endometriosis, fibroids, and polycystic ovary syndrome (PCOS) at the same time?

Having all three conditions, fibroids, endometriosis, and PCOS, is rare but possible due to their overlap and individual commonality. Severe pelvic pain, heavy bleeding, and irregular cycles should prompt a thorough investigation.

Can PCOS or endometriosis affect my chances of conceiving?

Yes, both can impact fertility. PCOS typically affects the release of the egg (ovulation), while endometriosis can affect the anatomy (tubes/ovaries) and egg quality due to inflammation. However, with proper treatment, pregnancy is very possible for both.

What are the treatment options for women with both PCOS and endometriosis who are struggling with infertility?

Treatment usually involves laparoscopic surgery and hormonal treatment to remove endometriosis and medications like Letrozole for PCOS-related anovulation. Lifestyle changes that lower inflammation and insulin levels are vital, while IVF is effective for complex cases.