If you’ve ever sat in a gynecologist’s office trying to explain that your pelvic pain somehow feels connected to the migraines wrecking your week — and watched the doctor’s face go politely blank — you are not imagining things. A growing stack of research says the overlap is real, it’s significant, and most medical records are missing it entirely.

A recent pooled analysis of more than 13 million women found that those living with endometriosis have roughly 2.3 times the odds of also experiencing migraines compared to women without the condition. That’s not a small statistical blip. That’s a signal that two conditions treated by two different specialists, in two different parts of the body, might actually share more plumbing than anyone’s been willing to admit.

What the new analysis actually found

The data, presented at a major neurology meeting, drew from 35 studies spanning five decades. Researchers compared migraine rates among roughly 207,000 women with endometriosis against nearly 13 million women without it. The headline number — 2.3x the odds — is striking on its own. But the more interesting story is how dramatically the numbers shifted depending on how researchers looked.

Studies that leaned on a single year of insurance billing codes caught migraine in fewer than 5% of women with endometriosis. Studies using longer windows of insurance claims found rates somewhere between 18% and 43%. And when researchers actually sat down with women and asked them directly about their symptoms? The rate jumped to between 54% and 78%.

Think about what that gap means in practice. Short-term medical records may be missing up to 90% of women who have both conditions. Not because the overlap isn’t there — but because nobody’s asking the right questions in the right room.

Why pelvic pain and head pain might share a wire

Here’s where it gets interesting. Chronic pelvic pain and the nervous system are already known to be deeply intertwined — that’s not new. What researchers are now zeroing in on is a specific molecule called calcitonin gene-related peptide, or CGRP for short. CGRP is a chemical messenger that carries pain signals and can set off inflammation in nerve tissue.

Its role in migraine is well understood at this point. A whole class of newer migraine medications targets CGRP specifically, and for many sufferers they’ve been genuinely life-changing. What’s still an open question is whether this same peptide is quietly contributing to the inflammation, scarring, and nerve involvement that define endometriosis.

If the answer turns out to be yes — and that’s a real if, not a sure thing — it opens a door most women dealing with both conditions would walk through gladly. One treatment pathway that addresses two problems at once, instead of juggling two separate medication regimens and two separate specialists who rarely talk to each other.

Why your records probably don’t show the connection

Modern medicine loves silos. A gynecologist tracks reproductive health. A neurologist tracks headaches. Primary care sees the whole person in theory, but in practice gets fifteen minutes to triage whatever’s most urgent. Your electronic health record is less a story of your body than a scattered pile of appointment notes, each written by someone who wasn’t in the room for the others.

So when a researcher runs an insurance claims database looking for women coded with both endometriosis and migraine within the same year, they’re not really measuring how many women have both. They’re measuring how many women happened to get both diagnoses recorded by the right code in the right time window by two providers who may never have shared a note.

That’s how you end up with a reported rate of under 5% in one dataset and over 70% in another. Same women, roughly. Very different methods of asking.

What to do if this sounds like your life

If you’re nodding along reading this — pelvic pain plus migraine attacks, each treated as its own separate puzzle — there are a few practical moves worth making before your next appointment.

• Bring everything up, even what seems unrelated. Your gynecologist probably won’t ask about your head. Your neurologist probably won’t ask about your cycle. Volunteer the information anyway. The connection isn’t their default assumption, but once you flag it, good clinicians can work with it.
• Keep a simple symptom log. Nothing fancy — a notes app will do. Track when migraines hit, when pelvic pain spikes, and where you are in your cycle. Patterns on paper (or screen) are easier to act on than vague recollections.
• Ask about CGRP-targeting medications if migraines are a major part of your picture. They’re already first-line for migraine prevention in many cases, and the research conversation about their broader potential is actively evolving.
• Push for coordinated care. If your providers aren’t talking to each other, you’re the messenger. Ask for notes to be shared. Repeat the same symptom story in both offices until it sticks in both charts.
• Protect your nervous system. Chronic pain, of any flavor, wears down the system that processes it. Sleep, nourishment, movement you can tolerate, and genuine rest aren’t a cure — but they’re not nothing, either.

The bigger picture: chronic pain and the wider healing landscape

Chronic pain conditions like endometriosis and migraine don’t exist in a vacuum. They sit inside a nervous system that’s learned, over years, to be on high alert. That’s part of why so many women dealing with these conditions eventually explore adjacent paths — somatic therapy, breathwork, trauma-informed bodywork, meditation retreats, and in some cases plant-medicine or psychedelic-assisted work for the depression and burnout that so often ride along with chronic illness.

None of that replaces medical care. A migraine neurologist and an endo-literate gynecologist are irreplaceable. But a lot of women living with long-haul pain describe the real shift happening when they stop treating their body as a collection of unrelated malfunctions and start treating it as one connected system that’s been under siege for a long time. That reframe tends to open doors — in how you talk to your doctors, in what therapies you’re willing to try, in how you prioritize recovery.

The takeaway

Migraine and endometriosis overlap far more than the average medical chart suggests. The system isn’t really built to see it, which means women are left stitching the picture together themselves — logging symptoms, repeating stories, dragging information from one specialist’s office to another’s. It’s not fair, and it shouldn’t be the patient’s job. But until coordinated care catches up, self-advocacy is the fastest route to being taken seriously on both fronts.

And for readers whose chronic pain has pushed them to look beyond the standard clinical toolkit — toward integrative healing, nervous-system work, or supported retreat environments — a curated range of healing and recovery retreats can be explored on our marketplace here. Whatever path you take, the point is the same: your symptoms are connected, you’re not making it up, and the right care team will act like it.