Endometriosis pain tends to be cycle-locked and cramping; PeVD aches daily with a positional signature — worse standing, better lying down. But the two overlap, coexist, and hide each other: a confirmed endo diagnosis doesn't rule out a venous contribution, and a hysterectomy for one doesn't treat the other.
"I was 99% convinced I had endometriosis — turns out it's PCS." "Stage 4 endo, full hysterectomy, still in pain." Both sentences come from this community, sometimes from the same woman a few years apart. This guide is about holding two possibilities honestly.
Why they get confused
Both cause chronic pelvic pain in women of the same age range. Both flare with cycles (pelvic veins are hormone-responsive too). Both are notoriously under-diagnosed — so whichever one a clinician knows well tends to absorb the whole story. And crucially, the standard tools for one barely see the other:
- Laparoscopy — the gold standard for endometriosis — is poor at showing venous congestion: under anaesthetic, head-down, with the abdomen inflated, pelvic varices empty and collapse. A "clean" laparoscopy answers the endo question, not the vein question.
- Venography shows veins and says nothing about endometrial implants.
Brushstroke differences
Patterns, not proofs:
- Timing: endo classically peaks with periods and ovulation; PeVD aches most days, building through the day, worst after long standing.
- Position: lying down reliably eases PeVD; endo is largely indifferent to posture.
- Sex: endo pain is often deep and during; PeVD's signature is the ache afterwards, lingering for hours.
- Company: vulvar/thigh veins, leg heaviness and haemorrhoids lean venous; bowel-cycle symptoms and infertility history lean endo.
And the honest complication: many women have both. Chronic pelvic pain syndromes cluster — endo, adenomyosis, PeVD, pelvic floor dysfunction — and treating one layer can unmask the next. Improvement without resolution after endo surgery is exactly the picture where a venous work-up pays off.
The hysterectomy question
Asked constantly, so plainly: hysterectomy removes the uterus — it does not treat refluxing ovarian or pelvic veins. It can be the right operation for adenomyosis or fibroids, but pelvic congestion routinely persists after one, because the faulty veins are still there (ovaries and their veins often stay; even when ovaries go, pelvic varices can remain). If PeVD is on your differential, the venous work-up belongs before irreversible surgery — "we found huge veins during your hysterectomy" is a sentence heard too often in this community, always too late.
Keeping both on the table
- Diagnosed with endo but pain has a positional/standing pattern → ask for a venous assessment as well; the diagnoses are not competitors.
- Post-hysterectomy or post-excision pain persisting → veins move up the list — see how PeVD is diagnosed.
- Diagnosed with PeVD but cycle-locked pain dominates → the endo question deserves its own answer from a gynaecologist experienced in it.
Two specialists may be better than one: this is genuinely a field where the gynaecology and vascular worlds each hold half the map — and the check helps you carry an organised story between them.