Tailbone pain, known medically as coccydynia, most often comes from some form of trauma: a fall, prolonged sitting on a hard surface, or repetitive strain. About 90% of cases resolve on their own or with simple conservative treatment, but understanding the cause helps you pick the right approach and know when something more serious might be going on.
The Most Common Causes
A backward fall is the single most frequent trigger. Landing on your tailbone can bruise, dislocate, or fracture it, and you may not realize the bone was injured if the pain starts out mild and worsens over the following days. You don’t need a dramatic fall either. Slipping on ice, missing a step, or wiping out on a wet floor is enough.
Prolonged sitting is the second major culprit, especially on hard or narrow surfaces. Office workers, long-haul drivers, and students who spend hours in rigid chairs often develop tailbone pain gradually. The pressure concentrates right on the small, curved bone at the base of your spine, and over time the surrounding tissues become irritated and inflamed.
Repetitive motion sports like cycling and rowing can strain the ligaments and soft tissue around the tailbone. The constant rocking between forward and backward positions creates friction and micro-trauma that builds up over weeks or months. This is a classic repetitive strain injury, and it tends to creep up slowly rather than hitting all at once.
Childbirth and Pregnancy
The tailbone sits right behind the birth canal, which makes it especially vulnerable during delivery. A difficult or instrument-assisted birth can bruise, dislocate, or fracture the coccyx as the baby passes through. During pregnancy, hormonal changes loosen the ligaments around the pelvis to prepare for delivery, but that same looseness can leave the tailbone less stable and more prone to shifting out of position. Some women first notice tailbone pain in the third trimester, when the baby’s weight puts direct pressure on the coccyx, and it may persist for weeks or months after delivery.
Who Gets Tailbone Pain More Often
Women are roughly five times more likely to develop tailbone pain than men. This comes down to a few overlapping factors: women have wider pelvises that expose the coccyx to more direct pressure while sitting, naturally greater ligament flexibility that allows the tailbone to shift more easily, and the added risk from childbirth.
Body weight also plays a role. A BMI above about 27 in women or 29 in men increases risk for both injury-related and non-injury tailbone pain. Extra weight increases the load on the coccyx during sitting. Interestingly, being very underweight can also be a risk factor, because less padding around the buttocks means less cushioning between the bone and whatever surface you’re sitting on.
Less Common Causes
Not all tailbone pain traces back to an obvious injury. Degenerative joint disease can wear down the small disc-like joint where the tailbone meets the sacrum, especially as you age. The joint can also become either too stiff or too loose, both of which cause pain with movement or pressure. Some people have an unusual shape or curvature to their coccyx that makes it naturally more prone to irritation. Rarely, infections or growths in the area can produce similar symptoms.
What the Pain Typically Feels Like
The hallmark symptom is a dull, aching pain right at the base of your spine that gets noticeably worse when you sit down, especially on hard surfaces. Shifting from sitting to standing often produces a sharp spike of pain. Leaning back in a chair tends to make it worse because it puts your full weight directly over the coccyx, while leaning forward can bring some relief. Many people also notice increased pain during bowel movements, during sex, or when getting up from a low seat or couch. The pain can range from mildly annoying to severe enough that sitting through a meal or a meeting feels impossible.
How Tailbone Pain Is Diagnosed
A doctor can often identify coccydynia through a physical exam and your description of when the pain started and what makes it worse. If imaging is needed, the standard approach is lateral X-rays taken while you’re sitting and while you’re standing. Comparing the two positions reveals whether the tailbone shifts more than about 25 degrees, which signals instability or dislocation.
Sometimes X-rays look normal even when the tailbone is genuinely injured. If the clinical picture strongly suggests coccydynia but initial imaging doesn’t show anything, an MRI or CT scan can pick up bone bruising, stress fractures, or soft tissue swelling that plain X-rays miss.
At-Home Relief That Works
The simplest and most effective first step is taking pressure off the tailbone when you sit. A coccyx cushion with a cutout or channel at the back prevents your tailbone from contacting the seat. Several styles are available:
- Wedge cushions tilt your pelvis slightly forward, shifting weight onto your thighs and away from the coccyx.
- Donut or horseshoe cushions have a center cutout that suspends the tailbone in open space.
- Memory foam cushions with a rear cutout mold to your body shape while keeping pressure off the coccyx specifically.
- Full-length seat cushions stay in place on a chair better than smaller cushions and let you shift forward or backward without losing the pressure relief.
Beyond cushions, leaning forward slightly when you sit redirects weight to your sit bones and thighs. Alternating between sitting and standing throughout the day helps, and applying ice to the area for 15 to 20 minutes several times a day can reduce inflammation in the early stages. Over-the-counter anti-inflammatory pain relievers can also take the edge off.
Stretches and Physical Therapy
Gentle stretching and strengthening can relieve tension in the muscles and ligaments attached to the tailbone. The pelvic floor muscles connect directly to the coccyx, and when they’re chronically tight, they pull on the bone and worsen pain. Learning to relax these muscles, sometimes with the guidance of a pelvic floor physical therapist, is one of the more effective non-surgical treatments.
Useful exercises include child’s pose, which gently stretches the lower back and takes tension off the coccyx, and cat-cow stretches, which mobilize the entire lower spine. Bridge exercises and reverse clamshells strengthen the glutes and hip stabilizers, which can reduce how much load the coccyx absorbs. Side planks build core stability that supports better pelvic alignment overall. These should feel like gentle, controlled movements. If any exercise sharpens your pain, back off.
Medical Treatments for Persistent Pain
When home care doesn’t provide enough relief after several weeks, doctors may recommend an injection. A nerve block targeting a cluster of nerves just in front of the tailbone can significantly reduce pain and is one of the more reliable options for chronic cases. These injections typically combine a local anesthetic with a steroid. The anesthetic provides immediate relief, while the steroid reduces inflammation over a longer period. Research suggests adding the steroid is important for lasting results rather than relying on the anesthetic alone.
For the small percentage of people whose pain persists despite months of conservative care, surgical removal of part or all of the tailbone is an option. The procedure has consistently high satisfaction rates. In studies tracking patients for over a year, pain scores dropped by more than half compared to pre-surgery levels, and patient satisfaction averaged around 8 out of 10. Partial removal is less invasive with a shorter recovery, but complete removal provides more definitive relief and lower rates of symptoms returning. The complication rate across large studies sits around 8%, mostly related to wound healing at the surgical site.
Signs That Something Else May Be Going On
Tailbone pain is almost always benign, but certain patterns warrant a closer look. Pain that started without any injury, keeps getting worse over weeks, and doesn’t respond to rest or position changes deserves medical attention. Unexplained weight loss, fever, or a history of cancer combined with new tailbone pain raises the index of suspicion for something beyond a simple musculoskeletal problem. Numbness, tingling, or weakness spreading into your legs, or new problems with bowel or bladder control alongside tailbone pain, should prompt a prompt evaluation. These combinations are uncommon, but they’re the ones worth knowing about.