Key Summary:
Chronic pelvic pain can persist or repeatedly return even when scans, blood tests, or other investigations appear normal. This is because pelvic pain may arise not only from the pelvic organs, but also from muscles, joints, nerves, or referred pain from the lower back and surrounding structures. Shared nerve pathways can also make the source difficult to identify. For persistent or unexplained pelvic pain, Specialist Pain International Clinic in Singapore, led by Dr Nicholas Chua, provides specialist assessment to identify potential pain generators and guide appropriate treatment, including rehabilitation, medical therapy, and targeted image-guided procedures where suitable.
Pelvic pain can be particularly frustrating when it keeps returning despite previous tests showing nothing obviously wrong.
Some people undergo scans, blood tests, gynaecological or urological investigations without finding a clear explanation for their symptoms. Others receive treatment for a suspected condition, only for the pain to return months later.
This does not necessarily mean there is no cause. Chronic pelvic pain is complex because pain can originate from multiple structures within and around the pelvis — and these structures often share overlapping nerve pathways.
Why Can Pelvic Pain Persist When Tests Are Normal?
Many routine investigations are designed to identify specific structural problems, such as infection, cysts, tumours, inflammation, or abnormalities involving the reproductive or urinary organs.
However, pelvic pain can also originate from structures that may not show an obvious abnormality on routine imaging.
These can include:
- – Pelvic floor muscles
- – Nerves within the pelvis
- – Lower back and sacroiliac joints
- – Abdominal wall muscles
- – Hip and surrounding soft tissues
Pain may also continue after the original injury or condition has improved because the nervous system remains sensitised.
As a result, a “normal” scan does not necessarily mean that the pain is imagined or that there is nothing left to investigate.
Common Causes of Persistent Pelvic Pain
Pelvic Floor Muscle Pain
The pelvic floor is a group of muscles supporting the bladder, bowel, and reproductive organs.
Like muscles elsewhere in the body, these muscles can become tight, overactive, or painful. Pelvic floor dysfunction may cause a deep ache or pressure and can sometimes make sitting, exercise, bowel movements, or sexual activity uncomfortable.
Nerve-Related Pelvic Pain
Several nerves travel through the pelvis and can become irritated or compressed.
One example is the pudendal nerve, which supplies sensation to parts of the pelvis and genital region. Pudendal neuralgia can cause burning, shooting, or electric-like pain that is often worse when sitting.
Other nerves originating from the lower spine can also refer pain into the groin, lower abdomen, or pelvic region.
Pain Referred From the Back, Hips, or Joints
The location where pain is felt is not always where it originates.
Problems involving the lumbar spine, sacroiliac joints, hips, or surrounding muscles may produce pain that is perceived in the pelvis, groin, or lower abdomen.
This overlap can make diagnosis challenging, particularly when investigations have focused mainly on the pelvic organs.
Persistent Pain Sensitisation
When pain continues for months, the nervous system can sometimes become increasingly sensitive to pain signals.
This process, often called central sensitisation, means pain may continue even after the original tissue injury has healed. Normal movement, pressure, or touch may begin to provoke disproportionate discomfort.
This does not mean that the pain is psychological. It reflects changes in how the nervous system processes and amplifies pain signals.
What Does Chronic Pelvic Pain Feel Like?
Symptoms vary considerably depending on the structures involved.
Symptom Pattern | Possible Source |
Deep aching or pressure | Pelvic floor muscles or pelvic structures |
Burning, shooting or electric pain | Nerve-related pain |
Pain worse when sitting | Pelvic floor or pudendal nerve irritation |
Pelvic pain associated with back or hip pain | Referred musculoskeletal pain |
Pain from normally non-painful pressure or touch | Pain sensitisation |
Because several conditions can produce similar symptoms, the pattern of pain — including what triggers or relieves it — can be as important as imaging results.
When Should Persistent Pelvic Pain Be Assessed?
Pelvic pain should first be appropriately investigated to exclude medical conditions involving the reproductive, urinary, gastrointestinal, or other pelvic organs.
If these investigations are normal but pain persists, it may be useful to consider whether muscles, nerves, joints, or the pain-processing system are contributing.
Further assessment may be appropriate when:
- – Pelvic pain has lasted several months or repeatedly returns
- – Sitting consistently makes the pain worse
- – Pain is burning, shooting, or accompanied by altered sensation
- – Pelvic pain occurs alongside lower back, hip, or groin pain
- – Previous treatment has provided only temporary relief
- – Pain significantly affects work, sleep, exercise, or everyday activities
How Is Chronic Pelvic Pain Treated?
There is no single treatment for chronic pelvic pain because management depends on the underlying pain source.
Pelvic floor or musculoskeletal problems may respond to specialised physiotherapy, exercise, and rehabilitation. Medications may be considered when inflammation or nerve-related pain is involved.
For selected patients, diagnostic nerve blocks or other image-guided procedures may also be used. A nerve block involves placing medication around a specific nerve or nerve group and can sometimes help determine whether that nerve is contributing to the pain while also providing symptom relief.
When pain sensitisation has developed, treatment may require a broader approach combining physical rehabilitation, pain management, and strategies aimed at reducing nervous-system hypersensitivity.
Assessment at Specialist Pain International Clinic
Specialist Pain International Clinic (SPI) in Singapore, led by Dr Nicholas Chua at Mount Elizabeth Novena, assesses persistent and complex pain conditions, including pelvic pain that may involve nerves, muscles, joints, or referred pain from surrounding structures.
Assessment focuses on identifying potential pain generators and understanding how different structures may be contributing to persistent symptoms. Depending on the cause, treatment may include medical therapy, rehabilitation, or targeted image-guided procedures such as diagnostic nerve blocks.
If pelvic pain keeps returning despite previous investigations or treatments, a broader pain assessment may help identify contributing causes that are not always apparent on routine tests.
