Tailbone Pain: Causes, Pelvic Floor Connections, and What a Good Evaluation Looks Like
If you’ve dealt with tailbone pain, also called coccydynia, you already know it can take over your day fast. Sitting becomes a strategy. Driving feels like a test of endurance. Desk work, long meetings, nursing a baby, bowel movements, and even rolling over in bed can suddenly come with a “tailbone cost.”
And for a lot of people, the hardest part is not even the pain. It is the experience of being dismissed. Tailbone pain often lives in the “in-between” of healthcare. It does not always show up clearly on imaging, and it can overlap with low back pain, SI joint irritation, pelvic floor dysfunction, constipation, postpartum changes, and chronic pelvic pain. Too often, people hear some version of: “Nothing is wrong.” But pain is information. And you deserve care that treats it that way.
This is one reason pelvic floor physical therapy can be so helpful for tailbone pain. A thorough evaluation looks beyond the coccyx itself and considers how your pelvic floor, hips, low back, bowel habits, posture, movement patterns, and nervous system may all be contributing.
Zooming out, this is part of a bigger pattern: pelvic pain is incredibly common and still under-recognized. Chronic pelvic pain affects 26% of the world’s female population (Lamvu et al., 2021). Pelvic floor dysfunction is also extremely common alongside low back pain. One study found that 95% of individuals with lumbopelvic pain had some form of pelvic floor dysfunction (Dufour et al., 2018). Coccyx pain shows up more than many people expect, too. About 50% of women seeking pelvic PT for other pelvic pain conditions had coccyx pain on evaluation (Neville et al., 2021). So if your tailbone hurts, you are not alone. And you are not “overreacting.”
Before we list every possible cause, let’s start with one question that changes the whole plan: Is the coccyx the main driver of your pain, or is it more of a bystander?
Is the coccyx the main driver or a bystander?
Tailbone pain can be very real even when the coccyx isn’t the only (or even the main) source.
Sometimes the coccyx is the primary driver, the tissue right there is injured or mechanically irritated. Other times, the coccyx is the place that hurts because the system around it is stressed: pelvic floor tension, constipation/straining, hip and low back mechanics, SI joint irritation, myofascial referral pain, postpartum changes, or a nervous system that’s been on high alert.
One way I like to explain it is that coccyx pain often falls into one of three buckets. In some people, the coccyx really is the main generator. In others, the coccyx is more of a “bystander” it’s taking the blame while the driver is somewhere else (like the SI joint/low back or a pelvic floor tension pattern). And for plenty of people, it’s a combination: the coccyx may have started the problem or stayed irritated, and the surrounding system is now contributing.
And it’s okay if you don’t know which category you’re in. That’s what evaluation is for.
How it shows up in real life
When the coccyx is the primary driver, the story is often pretty clear. Someone can usually tell me exactly what started it “I fell,” “I landed hard,” “I sat on bleachers all weekend and something changed.” The pain tends to feel very pinpoint, and sitting pressure (especially leaning back) is the obvious villain. Even small changes that unload pressure can make a noticeable difference.
When the coccyx is more of a bystander, the pattern is usually messier and honestly, that’s not a bad thing. It’s just information. Tailbone pain might show up alongside a low back or SI joint flare. Or it might be one piece of a bigger “lumbopelvic” picture: pelvic floor tension, constipation/straining, hip tightness, glute trigger points, or a nervous system that’s been running on high alert for a while.
Sometimes people say things like, “It’s worst after a long day,” “It’s worse when I’m stressed,” “It flares during travel,” or “It changes week to week.” That doesn’t mean it’s in your head. It usually means there’s more than one driver and we need a plan that treats the whole system, not just the spot that hurts.
If you’re someone who loves clarity, here’s the simplified version: coccyx-driven pain tends to be very pressure-specific and very location-specific. Bystander-pattern pain tends to be more variable, more connected to bowel habits, back/SI symptoms, muscle referral patterns, or pelvic floor guarding.
Okay—so what are the actual drivers we see most often? Let’s break down the most common contributors, with the understanding that more than one can be true at the same time.
What actually causes tailbone pain?
Tailbone pain isn’t always one neat diagnosis. Most of the time, it’s a combination of mechanical irritation, muscle tension, and sometimes pain sensitivity that builds over time.
For some people, it starts with a clear event. A fall onto the butt, a hard landing in sports, or a season of sitting on hard surfaces can irritate the coccyx joint and nearby ligaments. The pain can feel sharp, bruised, or like you’re sitting on a pebble especially when you lean back.
For others, it’s postpartum. Sometimes there’s a known difficult delivery or an obvious moment where sitting suddenly felt different. Other times it’s more of a “perfect storm”: healing tissues, lots of sitting to feed a baby, constipation and straining, disrupted sleep, and a body that’s bracing without permission. Tailbone pain after birth is not rare, and it deserves the same respect as any other postpartum recovery issue.
And then there’s the pelvic floor factor. The pelvic floor has attachments in the coccyx region, and when those muscles are guarding—tight, overactive, or struggling to coordinate—tailbone pain can show up with sitting and bowel movements, and sometimes alongside other pelvic symptoms. This is one reason coccyx pain shows up so often in people who are coming to pelvic PT for something else (Neville et al., 2021).
Low back and SI joint issues can also masquerade as tailbone pain. Sometimes people notice that their “tailbone pain” flares when their back is irritated, or after a long day of standing, lifting, or twisting. Even if the pain is felt low, the driver can be higher up.
Myofascial referral pain is another sneaky one. Trigger points in glutes, deep hip rotators, adductors, and even parts of the pelvic floor can refer pain into the tailbone area. That means someone can be convinced the coccyx is “the problem,” but when we treat the muscle pattern and movement strategy, the tailbone symptoms calm down.
Constipation and straining matter more than most people expect. If bowel movements flare your tailbone pain, that’s not a random coincidence—it’s often a big clue. Straining increases pressure and bracing through the pelvic floor and coccyx region. If constipation is part of your story, you may also appreciate our Constipation Series, where we break down bowel mechanics and strategies in more depth. (READ OUR CONSTIPATION SERIES HERE)
Finally, sometimes the nervous system is part of why pain persists. Especially when pain has been around for months, people start avoiding sitting, bracing through transitions, and fearing flares. Sleep and stress get disrupted. The body stays guarded. That doesn’t mean the pain is psychological. It means the nervous system is doing its job protecting you and we need a plan that helps it feel safe enough to turn the alarm down.
If you’re reading this thinking, “Okay… so which one is me?” you’re asking the right question. The next step is understanding what a thorough evaluation should include.
What a thorough evaluation should feel like
A good evaluation for tailbone pain should feel like someone is finally connecting the dots.
Yes, we care about the coccyx, but we also care about why it’s irritated and what’s keeping it irritated. That means looking at the full lumbopelvic system: how you sit, how you move through sit-to-stand, how your hips and low back are contributing, whether the SI joint seems involved, and whether your pelvic floor is bracing or struggling to coordinate.
In pelvic PT, that often includes watching your movement patterns (not just asking where it hurts), checking nearby muscles that commonly refer pain into the coccyx area, and discussing bowel habits because constipation/straining can be a major perpetuating factor.
If pelvic floor muscle assessment is relevant, it should always be explained clearly and offered with full consent and it should never feel like “the one magic solution.” There are many ways to help coccyx pain, and internal work is just one possible (often effective) tool.
Most importantly, you should leave an evaluation with two things: a working hypothesis for what’s driving your symptoms, and a plan that doesn’t require you to stop living your life.
You deserve better than “just live with it”
If you’ve been told “nothing is wrong,” I want you to hear this clearly: Your pain still deserves a real explanation and a real plan.
Whether the coccyx is the driver, a bystander, or part of a bigger pelvic floor/back/SI pattern, the goal isn’t to prove where pain lives on a scan. The goal is to identify what’s driving your symptoms and help you get your life back.
Stay Tuned...In the next post, I’ll walk through what treatment can actually look like—pelvic PT approaches, sitting strategies that actually help, and exercise considerations so you don’t feel like you have to choose between “being active” and “being comfortable.”
If tailbone pain is affecting your sitting, driving, bowel movements, postpartum recovery, exercise, or intimacy, pelvic floor physical therapy can help. A comprehensive evaluation can determine whether the coccyx is the primary driver—or whether pelvic floor tension, low back/SI mechanics, constipation, or referred muscular pain is playing a bigger role.
You’re not broken. You’re not behind. And you’re not alone in this.
If you’re ready for next steps, our team can help you figure out whether your coccyx is the driver, a bystander, or part of a bigger pelvic floor/back/SI pattern—then build a plan that fits your life.