Chronic Pelvic Pain: Common Causes Explained

If you've had pelvic pain for months and still don't have a clear answer, you are not imagining it, and you are not alone. Chronic pelvic pain is one of the most common reasons women come to see me — and one of the most frequently dismissed.

The first thing to understand is that chronic pelvic pain is a symptom, not a diagnosis. It means pain in the lower abdomen or pelvis lasting six months or more. The causes range across several body systems — gynaecological, bowel, bladder, and the muscles and nerves of the pelvis — and in many women more than one factor is involved at once.

By the time women reach me, they've often been told the pain is normal, or that the scans were clear so there's nothing to treat. Neither is the end of the story. Let's map out what can actually be going on.

Gynaecological causes

The reproductive organs are a common source. Endometriosis — tissue similar to the womb lining growing outside the uterus — is a leading cause, and the pain isn't always neatly tied to your period. Adenomyosis, where that tissue grows into the muscle of the uterus, brings a heavier, more constant ache. Fibroids and ovarian cysts can contribute through pressure or size.

Past pelvic infection (pelvic inflammatory disease) and the adhesions — internal scar tissue — that can follow infection or surgery are also recognised causes. These are the conditions a gynaecological assessment is designed to look for.

Bowel and bladder causes

The pelvis is crowded, and the gut and bladder sit right alongside the reproductive organs — so they're often involved. Irritable bowel syndrome is common and can flare with your cycle, which makes it easy to confuse with a gynaecological problem. Constipation and inflammatory bowel conditions can also cause pelvic pain.

On the bladder side, bladder pain syndrome (also called interstitial cystitis) causes pain and urinary urgency without an infection to explain it. Because these overlap so closely with gynaecological symptoms, they are frequently missed when only the reproductive organs are examined.

Muscles and nerves

This is the group most often overlooked. The pelvic floor — the sling of muscles supporting the pelvis — can become tight, tender and painful, much like any other muscle in spasm. Nerves in the pelvis can become irritated or trapped, and old injuries or posture can refer pain into the area.

Musculoskeletal and nerve-related pain doesn't show up on a scan of the ovaries or uterus, which is exactly why it's so often dismissed — and why it needs someone looking for it specifically.

When the pain itself becomes the problem

Pain that has been present for a long time can change how the nervous system behaves. The system becomes more sensitive, turning the volume up, so that signals which wouldn't normally hurt start to. This is called central sensitisation, and it can keep pain going even after an original trigger has settled.

This matters because it explains why pain can be very real while every test looks normal. It is not "in your head" — it is in your nervous system, and it can be treated.

"My scans are normal — so why do I hurt?"

This is one of the most disheartening things a woman can be told, and it deserves an honest answer. In a substantial proportion of women with chronic pelvic pain, no single cause is found on scans or even at surgery. That does not mean nothing is wrong.

It usually means the cause sits in a system that imaging doesn't capture well — the muscles, the nerves, the gut, or the sensitised pain response itself. A clear scan should open a wider search, not close the conversation.

How chronic pelvic pain is assessed

Good assessment starts with time and a careful history — when the pain comes, what eases it, how it links to periods, bowels, bladder and movement. A pelvic examination and an ultrasound are usually the next step.

Importantly, a diagnostic laparoscopy is a second-line investigation, not a first step. It has a role when other findings point that way, but it isn't the automatic answer, and a normal laparoscopy doesn't mean your pain isn't real. The aim is to look across systems, not just one.

What to do next

If pelvic pain has been wearing you down, you deserve a thorough assessment that looks at the whole picture — not just one organ. As a medical gynaecologist, I take the time to listen, examine, arrange the right tests, and bring in the bowel, bladder, muscle and nerve angles when they matter. Learn about specialist endometriosis and pelvic pain care, or read more on how endometriosis is diagnosed, adenomyosis, and pelvic floor health. If painful periods are part of the picture, see why periods can be so painful.

Frequently asked questions

What counts as chronic pelvic pain? Pain in the lower abdomen or pelvis lasting six months or more. It can be constant or come and go, and it isn't limited to your period. It's a symptom that deserves proper assessment.

Why are my scans normal if I'm in pain? Many causes of pelvic pain — muscle, nerve, gut and a sensitised pain response — don't show on a scan of the ovaries and uterus. A normal scan should widen the search, not end it.

Is chronic pelvic pain always endometriosis? No. Endometriosis is a common cause, but bowel, bladder, muscle and nerve problems are frequent too, and often more than one factor is involved.

Do I need a laparoscopy? Not as a first step. A laparoscopy is a second-line investigation used when other findings point to it, not an automatic test for everyone with pelvic pain.

Can chronic pelvic pain be treated? Yes. Even when no single cause is found, the contributing factors — and the pain response itself — can usually be managed to improve daily life.

You deserve to be taken seriously

This article is for general information and is not a substitute for personal medical advice. Please see a qualified clinician about your individual situation.