The simple idea (no memorising)
Bacteria from the lower tract ascend along the passages you mapped in Concept 23:
It's often caused by sexually transmitted bacteria (gonorrhoea and chlamydia) but is frequently polymicrobial — so a negative test for those two does not rule PID out.
How it's recognised
PID can be dramatic (pain, fever, discharge) or surprisingly subtle. The key bedside clues are tenderness on internal examination — any of:
- cervical motion tenderness (moving the cervix hurts — the classic "chandelier sign"),
- uterine tenderness, or
- adnexal tenderness (over the tubes/ovaries).
Because it can be mild, doctors keep a low threshold to treat.
The test you must never skip
In any woman of reproductive age with pelvic pain: do a pregnancy test first. Why? Because the most dangerous look‑alike is an ectopic pregnancy. 🚩
Treatment and a complication
Treatment uses broad antibiotics to cover all the likely bugs (a common combination is ceftriaxone + doxycycline + metronidazole). If infection walls off into a pus‑filled mass — a tubo‑ovarian abscess — that's serious and often needs hospital care. One classic association: infection tracking up to irritate the liver capsule causes right‑upper‑tummy pain — Fitz‑Hugh–Curtis syndrome.
Why it matters
PID quietly damages fertility. Scarred tubes can't transport an egg, causing infertility or letting an embryo implant in the tube (ectopic pregnancy). Treating early and fully protects a woman's future — that's why it deserves urgency and care.
Quick check ✅
- What examination findings suggest PID?
- What single test must come first, and what dangerous condition does it rule out?
Remember this 🌟
Where we're going next → One infection scars the linings so quietly it presents as infertility years later. Concept 28.