With expert input from a PRM Endometriosis and Pelvic Pain Specialist at PRM’s Center of Excellence in Troy
Polycystic Ovarian Syndrome (PCOS) and endometriosis are both chronic conditions that impact many individuals. While they can share some overlapping symptoms, they are fundamentally different in their causes, symptoms, and diagnoses. Understanding these distinctions is crucial for proper management and treatment.
What is PCOS?
PCOS is a hormonal disorder in which the ovaries produce excess androgens, commonly referred to as “male hormones.” This hormonal imbalance disrupts normal ovulation and can lead to a variety of symptoms, including:
- Irregular menstrual cycles (skipped periods or prolonged cycles)
- Weight gain or difficulty losing weight
- Hirsutism (excess hair growth on the face, chest, or back)
- Acne and oily skin
- Multiple cystic-appearing follicles on the ovaries (visible on ultrasound)
Diagnosis of PCOS is typically based on:
- Clinical symptoms
- Blood tests measuring hormone levels
- Ultrasound imaging of the ovaries
What is Endometriosis?
Endometriosis is a systemic inflammatory condition in which tissue similar to the lining of the uterus grows outside of the uterus, often on the ovaries, fallopian tubes, bladder, or bowel. This misplaced tissue responds to estrogen, thickening and breaking down like normal uterine tissue—but with no way to exit the body, leading to inflammation, scarring, and severe pain.
Endometriosis symptoms can include:
- Severe period pain (often worse than typical cramps)
- Heavy menstrual bleeding
- Painful intercourse
- Chronic pelvic pain
- Bowel and urinary symptoms (such as constipation, bloating, or painful urination)
- Infertility
- No symptoms at all (in some cases)
Unlike PCOS, endometriosis cannot be diagnosed through ultrasound or blood tests. The only way to confirm it is through laparoscopy, a minimally invasive surgical procedure where a doctor examines the pelvic organs for endometriotic lesions.
Key Differences Between PCOS and Endometriosis
Differences in Causes
- PCOS is caused by a hormonal imbalance, specifically an excess of androgens.
- Endometriosis is caused by misplaced uterine-like tissue responding to estrogen.
Differences in Symptoms of PCOS and Endometriosis
- PCOS often involves irregular periods, weight gain, excess hair growth, and acne.
- Endometriosis is known for severe pelvic pain, painful periods, heavy bleeding, and pain with intercourse.
Differences in Diagnosing PCOS and Endometriosis
- PCOS is diagnosed through clinical symptoms, blood tests, and ultrasound.
- Endometriosis requires surgery (laparoscopy) for a definitive diagnosis.
Differences in PCOS and Endometriosis Affects on Fertility
- PCOS can make ovulation irregular, leading to difficulties with conception.
- Endometriosis can cause scarring and blockages that affect fertility.
Can You Have Both PCOS and Endometriosis?
Yes! Some individuals are diagnosed with both conditions, which can make symptom management more challenging. If you suspect you have either (or both), it’s important to seek evaluation from a specialist who can provide a tailored treatment plan.
Final Thoughts
PCOS and endometriosis are different conditions, but both can significantly impact quality of life. If you’re experiencing symptoms, working with a healthcare provider to reach a proper diagnosis is the first step toward effective treatment and relief.
If you think you may be experiencing the symptoms of endometriosis, take our symptoms quiz or schedule a consultation with a specialist today.
