Why Does My Tailbone Hurt When I Sit?

 Your tailbone may hurt when you sit because pressure irritates the coccyx, its small joints or the surrounding muscles and ligaments. This is called coccydynia. Prolonged sitting, a fall, childbirth or changes in cushioning around the area can contribute, although sometimes no clear cause is found. Pain at the top of the buttock crease can also come from a skin problem rather than the bone itself. This guide explains the differences, practical ways to sit more comfortably and when assessment is needed. Our introduction to coccydynia provides further background on tailbone symptoms.

Where is tailbone pain usually felt?

The coccyx sits at the very bottom of the spine, below the sacrum. Muscles and ligaments attach around it, including structures associated with the pelvic floor. Coccydynia usually causes tenderness in the centre of this area, near the top of your bottom.

Pain may feel bruised or achy, with a sharper twinge when sitting down or getting up. NHS tailbone guidance also describes discomfort when bending forwards or opening your bowels.

Pain farther to one side, higher across the lower back or travelling down a leg may have another source. Pointing to the exact area helps your clinician distinguish
coccyx tenderness from neighbouring back, pelvic or skin conditions. Our lower back pain assessment information explains why identifying the source matters before treatment.

What causes tailbone pain when sitting?

Several different factors can make sitting uncomfortable. Having pain does not necessarily mean that the coccyx is fractured or displaced.

Can prolonged sitting cause coccyx pain?

Yes. Long periods on a hard chair, driving or cycling can repeatedly load the coccyx and surrounding tissues. Slumping backwards may concentrate pressure in an already sensitive area. Pain can gradually build during a working day or remain noticeable after you stand up.

There is no single sitting limit that suits everyone. Changing position before discomfort becomes intense is more useful than trying to maintain one rigid posture throughout the day. Note whether a particular chair, journey or activity reliably triggers symptoms.

Could a previous fall or childbirth explain it?

Landing on your bottom can bruise or injure the coccyx. Pregnancy and childbirth can also strain the surrounding tissues. Symptoms may persist after the original event, especially if everyday sitting continues to aggravate the area.

Tell your clinician about older injuries and recent delivery, even if they initially seemed unrelated. Significant pain after a fall deserves assessment rather than assuming it is simply bruising.

Can joint movement or muscle tension contribute?

The coccyx can be unusually mobile or relatively stiff, and surrounding muscles can contribute to pain. Northern Ireland’s public health information includes altered coccyx flexibility among possible causes. Sometimes an examination finds no single explanation; this does not mean the discomfort is imaginary.

Why might tailbone pain start after weight loss?

Losing padding around the buttocks may make pressure from a seat more noticeable. Specialists at the Hospital for Special Surgery describe reduced cushioning as one contributor to coccyx pain. This is a possible explanation for symptoms after weight loss, not a diagnosis based on weight alone.

Consider whether your seating, activity levels or time spent driving changed at the same time. A coccyx cushion and adjustments to sitting may help reduce pressure while the cause is assessed.

You do not need to assume that regaining weight is the solution. Discuss persistent symptoms with a clinician. Weight loss that was unintentional, especially alongside continuing pain, needs medical review rather than being attributed to reduced padding.

Does sharp pain mean my tailbone is damaged?

Sharp pain can occur with coccydynia, particularly during the transition between sitting and standing. Pain intensity alone cannot show whether there is a fracture, joint irritation or a problem in nearby tissues.

Tell your clinician whether the pain follows trauma, occurs only under pressure or continues when you are resting. Also mention symptoms affecting your legs, bladder or bowels. These details help determine whether a routine MSK assessment is suitable or more urgent investigation is needed.

What causes pain at the top of the buttock crack when sitting?

A painful spot in the skin crease may be a pilonidal sinus, which is a small opening or tunnel in the skin. If infected, it can form a painful swelling or abscess and make sitting difficult.

NHS pilonidal sinus guidance advises urgent GP assessment for a painful lump at the top of the buttock crease that bleeds or leaks pus. This requires a different treatment pathway from coccydynia. Do not squeeze or try to drain it yourself.

If you can feel a separate lump, describe it when booking. Our guide to hard lumps under the skin explains why examination matters. A soft tissue lump scan may be appropriate for selected findings, but an obvious infected swelling should receive medical attention first.

When should tailbone pain be checked urgently?

Go to A&E immediately if pain around the lower spine occurs with new numbness around your genitals or anus, difficulty passing urine, loss of bladder or bowel control, or weakness or numbness in both legs. These are warning symptoms highlighted in NHS back pain advice and should not wait for a private appointment.

Seek urgent medical advice for rapidly worsening severe pain, fever or feeling unwell, especially with redness, swelling or discharge. Arrange prompt GP review for persistent night pain, unexplained weight loss or a new lump. These symptoms do not establish a serious diagnosis, but they change the assessment needed.

How can you make sitting more comfortable?

Reduce direct pressure and vary your position. The NHS physiotherapy leaflet from TIMS supports practical changes and tailored exercise as part of managing coccyx symptoms.

Which sitting changes may help?

·         Try a coccyx cushion with a rear cut-out that keeps pressure away from the painful point.

·         Support your lower back and keep your feet comfortably supported.

·         Alternate sitting with standing or short walks rather than staying still for long periods.

·         Adjust your car or desk seat so you do not repeatedly lean onto the tender area.

A cushion should make sitting more comfortable; stop using one that increases pain. You may need to try different positions rather than forcing yourself upright throughout the day.

Can heat, pain relief or exercise help?

A wrapped cold pack or gentle warmth may ease symptoms. Avoid direct contact between a hot or frozen pack and your skin. Ask a pharmacist which pain relief is suitable, particularly if you take regular medicines or have other health conditions.

Keep moving within comfortable limits. A physiotherapist can assess whether you need mobility work, strengthening or help relaxing the pelvic floor. Avoid forcing stretches that reproduce sharp pain. Our physiotherapy service can advise on the appropriate rehabilitation appointment and whether specialist pelvic health input is needed.

Do you need an ultrasound, X-ray or MRI?

Tailbone pain is usually assessed first through your history and an examination. Imaging is selected to answer a specific clinical question, not simply because sitting hurts.

An X-ray may be considered after injury or when a bony problem is suspected. MRI may help investigate persistent, unusual or concerning symptoms. Ultrasound can assess some nearby soft tissues and guide selected procedures, but it cannot fully assess the inside of the coccyx or exclude every spinal condition.

Our musculoskeletal scan information describes ultrasound’s role. Ask which investigation would change your treatment before booking a scan.

What happens if tailbone pain does not settle?

Arrange review if symptoms have not improved after a few weeks or interfere with work, driving or sleep. Treatment usually starts with pressure reduction, suitable pain relief and rehabilitation. Selected patients may be offered a local anaesthetic and corticosteroid injection following assessment. Surgery is reserved for a small group with persistent symptoms despite other care.

Discuss your goals, previous treatment and any existing reports with our clinical team. Risk and further assessment will be discussed before the treatment.

When should you see a specialist?

Persistent or recurring pain deserves a clear diagnosis and treatment plan. For non-emergency symptoms, contact RAD Clinics about tailbone pain assessment. Ask about appropriate appointments at our Milton Keynes clinic or Northampton clinic so your next step matches your symptoms.