Navigating Pain & Hormones in September: Endometriosis, PMOS, and National Pain Awareness Month
Clinical Education · Medically Reviewed by Andrea Vidali, MD
Endometriosis Surgical Specialists International (ESSI) · Updated August 2026
Every September, the medical and advocacy communities observe National Pain Awareness Month alongside PMOS (Polyendocrine Metabolic Ovarian Syndrome) Awareness Month.
While Polyendocrine Metabolic Ovarian Syndrome (PMOS) and Endometriosis are distinct medical conditions, they frequently overlap in clinical practice. When chronic pelvic pain, endocrine dysregulation, and metabolic symptoms intersect, patients face a complex diagnostic path that requires multi-system evaluation.
Understanding the Conditions: PMOS vs. Endometriosis
Although both conditions affect the female reproductive system and can impact fertility, their primary underlying mechanisms are fundamentally different:
| Clinical Feature | PMOS (Polyendocrine Metabolic Ovarian Syndrome) | Endometriosis |
|---|---|---|
| Primary Pathology | Endocrine, metabolic, and ovulatory disorder. | Inflammatory, tissue-based disorder (ectopic lesions). |
| Hallmark Mechanisms | Hyperandrogenism, insulin resistance, and anovulation. | Estrogen dependency, progesterone resistance, and pelvic fibrosis. |
| Primary Symptoms | Irregular cycles, hirsutism, metabolic shifts, and polycystic ovaries. | Severe cyclic or acyclic pelvic pain, severe dysmenorrhea, and dyspareunia. |
| Pain Profile | Secondary (often related to persistent cysts or anovulatory cramping). | Primary (driven by inflammatory lesions, retroperitoneal fibrosis, and nerve involvement). |
| Primary Diagnostic Tool | Hormonal blood panels (androgens, insulin) and pelvic ultrasound. | Specialized 3D mapping ultrasound, retroperitoneal MRI, or surgical excision. |
The Intersection of Metabolic Imbalance and Chronic Pelvic Pain
During National Pain Awareness Month, healthcare providers emphasize that pain should never be dismissed as “normal.” In patients presenting with complex gynecological and metabolic symptoms, two distinct processes may occur simultaneously:
1. The Metabolic & Endocrine Axis (PMOS)
PMOS affects approximately 8% to 13% of reproductive-aged individuals worldwide. It is characterized by elevated androgen levels, irregular ovulatory patterns, and systemic metabolic inflammation. While it is a leading cause of ovulatory subfertility, it also contributes to systemic fatigue, metabolic distress, and persistent pelvic discomfort.
2. The Inflammatory & Tissue Axis (Endometriosis)
Endometriosis occurs when tissue similar to the lining of the uterus grows outside the endometrial cavity—invading the peritoneum, ovaries, uterosacral ligaments, bowel, bladder, and retroperitoneal nerve trunks. These ectopic lesions bleed and inflame with every cycle, generating local tissue damage, scarring, and severe localized or radiating pain.
When PMOS and Endometriosis Co-Exist
Because both conditions are common during reproductive years, a significant number of patients experience co-existing PMOS and Endometriosis. This combination often leads to diagnostic delay:
- Masked Symptoms: The irregular or missed periods typical of PMOS can mask the cyclical nature of endometriosis pain.
- Misattributed Pain: Severe pelvic pain in a patient with polycystic ovary morphology on ultrasound is often misattributed entirely to ovarian cysts, leaving deep infiltrating endometriosis unaddressed.
- Compounded Infertility: Anovulation from PMOS combined with the structural or inflammatory receptivity barriers of endometriosis requires a coordinated, dual-track fertility strategy.
Comprehensive Management: A Multi-System Framework
Effective long-term care requires addressing both the metabolic terrain and the physical disease:
Dual-Track Evaluation Pathway:
- Metabolic & Endocrine Track (PMOS): Evaluation of insulin sensitivity, androgen management, ovulatory restoration, and metabolic nutrition.
- Inflammatory & Tissue Track (Endometriosis): Advanced retroperitoneal imaging (US/MRI), neuropelveology/nerve mapping, targeted anti-inflammatory care, and complete laparoscopic excision surgery when indicated.
- Targeted Diagnostic Mapping: Differentiating between hormonal/metabolic pain and structural tissue disease using specialized imaging protocols.
- Metabolic Optimization: Addressing insulin resistance, hyperandrogenism, and systemic low-grade inflammation through nutrition, lifestyle, and targeted metabolic therapies.
- Surgical Clearance: When deep infiltrating endometriosis or retroperitoneal nerve entrapment is present, complete laparoscopic excision removes the physical drivers of chronic pain.
Frequently Asked Questions
Can you have both PMOS and Endometriosis at the same time?
Yes. While they are distinct conditions driven by different mechanisms, they frequently co-exist. Having one condition does not prevent you from developing the other.
Does PMOS cause severe pelvic pain?
PMOS can cause mild to moderate lower abdominal aching or sharp discomfort during infrequent ovulatory events or cyst rupture. However, severe, chronic, or debilitating pelvic pain is not typical of PMOS alone and should trigger an evaluation for endometriosis, adenomyosis, or nerve entrapment.
What is Pain Awareness Month?
Observed every September, National Pain Awareness Month is a global campaign dedicated to raising awareness about chronic pain, reducing healthcare stigma, and advocating for comprehensive, evidence-based pain management strategies.
Summary Takeaways
- September brings two critical health observances together: PMOS Awareness Month and National Pain Awareness Month.
- PMOS is a metabolic/endocrine disorder; Endometriosis is an inflammatory tissue disease.
- Co-existence is common: Irregular cycles from PMOS can delay an accurate diagnosis of endometriosis.
- Severe pain requires an accurate diagnosis: Pain that disrupts daily function should never be normalized.
