Coccydynia is pain in or around the coccyx, the small triangular bone at the very bottom of your spine, commonly called the tailbone. It typically feels worst when you sit down, shift your weight, or stand up from a seated position. The condition is five times more common in women than men, and in most cases, conservative treatment resolves it without surgery.
Why the Tailbone Is Vulnerable
Your coccyx works as the third leg of a tripod. The two bony bumps you sit on (at the base of your pelvis) form the other two legs. Together, these three points bear your weight whenever you’re seated. That weight-bearing role puts the tailbone in a uniquely exposed position, especially during a hard backward fall or hours spent on a rigid chair.
The coccyx itself is made up of three to five small, fused or semi-fused vertebrae. Muscles, tendons, and ligaments of the pelvic floor all attach to it, which is why tailbone pain can radiate into the surrounding area and affect everyday activities like sitting, having a bowel movement, or transitioning from sitting to standing.
Common Causes
Direct trauma accounts for 50 to 65% of coccydynia cases. A hard fall onto your backside is the most obvious trigger, but the injury can range from a mild sprain of pelvic floor muscles to an actual fracture or dislocation of the tailbone. Less dramatic but equally real: prolonged sitting on hard, poorly cushioned surfaces can gradually irritate the coccyx enough to cause lasting pain.
Childbirth is another significant cause. A difficult or instrument-assisted delivery can push against the tailbone from the inside, straining or displacing it. This partly explains the large gender gap in coccydynia rates. Women also have naturally greater ligament flexibility around the pelvis, which can make the coccyx more mobile and more prone to injury.
Body weight plays a role in both directions. A BMI above roughly 27 in women or 29 in men increases the risk because extra weight limits how freely the pelvis rotates when you sit, forcing more pressure onto the tip of the tailbone. On the other end, rapid weight loss can also trigger coccydynia by removing the natural fat pad in the buttocks that cushions the bone. Other risk factors include osteoarthritis, bone infection, and contact sports.
What Coccydynia Feels Like
The hallmark symptom is a localized ache or sharp pain right at the base of the spine. Sitting makes it worse, particularly on hard surfaces, and the pain often intensifies when you lean back or shift from sitting to standing. Some people notice discomfort during bowel movements or sex. The area may feel tender to direct touch. Pain can range from a dull background soreness to a stabbing sensation that makes prolonged sitting nearly impossible.
For some people the pain stays confined to the tailbone itself. For others it spreads into the lower buttocks, hips, or upper thighs because the pelvic floor muscles connected to the coccyx tighten in response to the irritation.
How It’s Diagnosed
Diagnosis usually starts with a physical exam. Your provider will press on the tailbone area to pinpoint the pain and may perform a rectal exam to feel the coccyx from the inside and check for unusual movement or a mass. In many straightforward cases, that’s enough.
When imaging is needed, dynamic X-rays are particularly useful. These involve taking one image while you’re standing and another while you’re seated in the position that causes pain. Comparing the two reveals whether the coccyx is moving too much (hypermobility), too little (hypomobility), or partially dislocating when you sit. That information helps guide treatment. An MRI may be ordered if there’s concern about infection, a tumor, or soft tissue problems that X-rays can’t show.
Because several other conditions can mimic tailbone pain, your provider may also want to rule out a pilonidal cyst (an infected pocket near the tailbone crease), pelvic floor dysfunction, or referred pain from the lower lumbar spine.
Conservative Treatment
The good news is that nonsurgical approaches work for roughly 90% of people with coccydynia. Treatment typically combines several strategies at once.
- Cushioning: A wedge-shaped or donut-shaped cushion with a cutout at the back takes direct pressure off the tailbone while sitting. This single change often provides noticeable relief.
- Anti-inflammatory medication: Over-the-counter pain relievers that reduce inflammation are a standard first step for managing flare-ups.
- Postural adjustments: Learning to sit with a slight forward lean and choosing chairs with adequate padding reduces coccygeal stress. Ergonomic education also covers techniques for bowel movements that minimize straining against the tailbone.
- Physical therapy: Pelvic floor physical therapy targets the muscles attached to the coccyx. Techniques include stretching and relaxation exercises for the pelvic floor, soft tissue mobilization to release muscle spasms, and postural retraining. For patients whose coccyx is stiff or poorly mobile, internal (intrarectal) manipulation of the levator ani muscle and coccyx has shown effectiveness, particularly when symptoms have been present for less than a year.
- Sitz baths: Soaking in warm, shallow water can ease muscle tension and reduce pain around the tailbone area.
Most people start to feel improvement within a few weeks of consistent conservative care, though full resolution can take several months depending on the underlying cause.
Injections for Persistent Pain
When cushions, therapy, and medication aren’t enough, targeted injections offer a middle ground before considering surgery. The two most common options are corticosteroid injections directly around the coccyx and a nerve block targeting the ganglion impar, a small nerve cluster that sits just in front of the tailbone.
A ganglion impar block works by interrupting pain signals and sympathetic nerve fibers in the area. Studies show significant pain reduction that can persist for at least six months after the procedure. The injection is done under imaging guidance to ensure accurate needle placement, and the procedure itself takes only a few minutes. Some patients get lasting relief from a single block, while others benefit from a repeat injection.
When Surgery Becomes an Option
Surgical removal of the coccyx (coccygectomy) is reserved for people whose pain has not responded to months of conservative treatment and injections. It is not a first-line approach, but for truly refractory cases it can be effective. A review of 742 patients across 28 surgical case series found that 84% reported good to excellent outcomes after coccygectomy.
Total removal of the coccyx generally produces better long-term results than partial removal. Partial coccygectomy carries a higher chance of persistent pain and the need for a second operation. The main surgical risk is wound infection, reported in roughly 12% of cases in one series, because of the incision’s proximity to the rectal area. Recovery typically involves several weeks of limited sitting and gradual return to normal activity.
Success rates across the surgical literature range from 60% to 100%, with the wide spread reflecting differences in patient selection, surgical technique, and how long patients tried nonsurgical care first. The best outcomes tend to occur in patients who have clear imaging findings (such as hypermobility or dislocation of the coccyx) and who completed a thorough course of conservative treatment before opting for surgery.