Diagnosis guide
Perineal pain — finding the real cause.
Perineal pain is a symptom, not a diagnosis. Patients are often treated for years for the wrong condition. This guide separates the nerve causes from the muscular and organ causes — and explains how the distinction is actually made.
Nerve causes
Neuropathic perineal pain is burning, electric or crushing, follows a nerve territory, and is provoked by sitting.
- Pudendal neuralgia and pudendal nerve entrapment
- Inferior cluneal nerve involvement (pain over the sit bone and outer perineum)
- Post-surgical nerve injury (mesh, hernia repair, prostatectomy, hysterectomy)
- Obstetric stretch injury after prolonged or instrumental delivery
- Post-herpetic or post-viral neuropathy
Muscular and fascial causes
A chronically overactive pelvic floor produces deep aching, a sense of pressure, and pain that builds with stress. It frequently coexists with nerve pain — muscle guarding is often the body's response to an irritated nerve, which is why physiotherapy alone plateaus in entrapment cases.
- Pelvic floor hypertonicity / non-relaxing pelvic floor
- Levator ani syndrome and obturator internus trigger points
- Coccydynia and sacrococcygeal joint dysfunction
Organ and structural causes to exclude first
Before anyone concludes the problem is neuropathic, treatable organ disease must be excluded — infection, stones, endometriosis, inflammatory bowel disease, fistula, abscess and malignancy all deserve a proper look.
The sitting test
One question separates most cases: does the pain get worse the longer you sit, and better when you stand or sit on a toilet seat? A clear yes moves pudendal neuralgia to the top of the list and justifies a dedicated pelvic nerve evaluation.
Common questions
What causes perineal pain?
Perineal pain has three broad categories of cause: nerve (pudendal neuralgia or entrapment, cluneal nerve involvement), muscle and fascia (pelvic floor hypertonicity, levator ani syndrome, myofascial trigger points), and organ or structural causes (prostatitis, infection, endometriosis, coccyx injury, post-surgical scarring). Pain that is clearly worse when sitting points strongly towards a nerve cause.
Why does my perineum hurt when I sit?
Sitting compresses the perineum against the ischial tuberosities and the ligamentous clamp at the ischial spine. If the pudendal nerve is irritated or entrapped, that mechanical load reproduces and amplifies the pain. Relief on standing or on a toilet seat is a hallmark of pudendal involvement.
Is perineal pain always prostatitis in men?
No — and this is the single most common misdiagnosis we see. True bacterial prostatitis is rare and responds to antibiotics. Most men labelled with 'chronic prostatitis' have a negative culture and are actually experiencing pelvic floor dysfunction or pudendal neuralgia.
How long should perineal pain last before I see a specialist?
Pain lasting more than three months, or any perineal pain that is clearly worse when sitting and has not responded to antibiotics or physiotherapy, warrants a dedicated pelvic nerve assessment rather than another round of the same treatment.
What tests are useful for perineal pain?
A structured clinical examination, urine culture to exclude infection, pelvic ultrasound or MRI to exclude structural disease, MR neurography when nerve entrapment is suspected, and a diagnostic pudendal nerve block. The block is often the most informative single test.
Speak with a pudendal nerve specialist.
Dr Renaud Bollens leads a specialist practice dedicated to chronic pelvic pain, with centers in Dubai and Belgium.