Pudendal neuralgia is chronic pain caused by irritation or compression of the pudendal nerve, which runs through the pelvis and provides sensation to the genitals, perineum, and anal region. The hallmark symptom is pain that gets worse when you sit and improves when you stand or lie down. Estimates of how common it is vary widely, from 1 in 100,000 to roughly 1% of the general population, and it affects women more than twice as often as men (about 7 women for every 3 men).
What the Pudendal Nerve Does
The pudendal nerve originates from the lower spine and travels through a narrow canal in the pelvis, splitting into three branches along the way. The first branch serves the anal canal and the skin around the anus. The second, the perineal nerve, provides sensation to most of the skin between the genitals and anus, the labia or scrotum, and the lower portion of the vaginal canal. The third branch is the dorsal nerve of the penis or clitoris, which carries sensation from the shaft and tip of those structures. This is why pudendal neuralgia can produce such a wide range of symptoms: the nerve is responsible for sensation, muscle control, and sexual function across the entire pelvic floor.
How It Feels
The pain typically shows up somewhere along the nerve’s path: the vulva, scrotum, perineum, rectum, or around the anus. It can feel like burning, stabbing, aching, or an electric shock. Some people describe a constant sense of pressure or a feeling that something foreign is sitting inside the body.
The defining feature is the relationship between pain and sitting. Sitting compresses the nerve against the rigid ligaments it passes through, so pain builds the longer you’re seated. Standing up or lying down relieves it. Interestingly, most people with pudendal neuralgia are not woken from sleep by the pain, though falling asleep can be difficult. Sitting on a toilet seat is often more comfortable than sitting on a flat chair because the open center reduces direct pressure on the nerve.
Beyond pain, the nerve’s wide reach means symptoms can include urinary urgency or frequency, difficulty with bowel movements (especially during straining), and sexual dysfunction. These overlapping symptoms are one reason the condition is frequently misdiagnosed as interstitial cystitis, chronic prostatitis, or vulvodynia.
Common Causes
Anything that compresses, stretches, or irritates the pudendal nerve can trigger neuralgia. The nerve passes through tight spaces bordered by ligaments and muscle, so even small changes in those tissues can create problems. Common causes include:
- Prolonged or repetitive sitting: Cycling is a well-known trigger because the saddle puts direct, sustained pressure on the nerve. Desk work and long drives can also contribute.
- Childbirth: Vaginal delivery can stretch or compress the nerve, particularly during prolonged labor.
- Surgical trauma: Pelvic or perineal surgeries can scar or injure the nerve directly.
- Thickening of surrounding ligaments: Over time, the ligaments the nerve passes through can stiffen and narrow the canal, trapping the nerve.
- Chronic constipation: Repeated straining increases pressure on the pelvic floor and the nerve.
How It’s Diagnosed
There is no single imaging test or blood work that confirms pudendal neuralgia. Diagnosis relies on a set of clinical criteria developed in Nantes, France, now widely used by specialists. Five criteria must be met:
- Pain falls within the territory the pudendal nerve supplies (genitals, perineum, or anal region).
- Pain is worse with sitting.
- The pain does not wake you from sleep.
- There is no detectable numbness on physical exam. (Actual sensory loss points toward a spinal nerve root problem rather than nerve entrapment.)
- A diagnostic nerve block provides pain relief.
The nerve block is a key step. A clinician injects a local anesthetic near the pudendal nerve, typically guided by ultrasound. If the pain temporarily disappears or significantly drops, it confirms the pudendal nerve as the source. Studies report that these blocks produce meaningful pain reduction in 68 to 94% of cases, depending on technique and placement accuracy. If the first four criteria are clearly met, a preliminary diagnosis can be made even before the block is performed.
Part of the diagnostic process involves ruling out conditions that mimic pudendal neuralgia. Interstitial cystitis, for instance, causes bladder pressure and urinary urgency but typically centers on bladder filling and emptying rather than worsening with sitting. Chronic prostatitis and vulvodynia share some of the same pain locations but lack the characteristic sitting-dependent pattern. A diamond-shaped zone of skin hypersensitivity across the perineum, extending from above the pubic bone to the mid-buttock area and out to the inner thighs, can help clinicians identify pudendal nerve involvement specifically.
Treatment: Starting Conservative
Most treatment plans begin with lifestyle changes and physical therapy before considering anything more invasive. Simple modifications can make a real difference: using a donut or U-shaped cushion removes direct pressure from the perineum when sitting, and avoiding activities that compress the nerve (long bike rides, prolonged desk sitting without breaks) helps limit flare-ups. Avoiding straining during bowel movements, often by managing constipation with diet or stool softeners, reduces repeated irritation.
Pelvic floor physical therapy is commonly prescribed. The goal is to release tension in the muscles surrounding the nerve through techniques like myofascial release, internal trigger point therapy, stretching, and breathing exercises focused on relaxation. Results vary. Some patients find it helpful, while others report minimal improvement or even temporary worsening of symptoms, particularly if the therapy is too aggressive early on. Finding a therapist experienced specifically with pudendal neuralgia matters.
Medications for nerve pain are a first-line option. The most common drug classes are low-dose antidepressants and anticonvulsants, both of which calm overactive nerve signaling. These are typically started at low doses and adjusted gradually. The nerve block used for diagnosis can also be therapeutic, providing weeks or sometimes months of relief. Some patients undergo a series of blocks as part of their ongoing management.
When Surgery Is Considered
Surgery becomes an option when conservative treatments fail to control pain, typically after several months of trying non-surgical approaches. The procedure is called pudendal nerve decompression: a surgeon frees the nerve from whatever structure is compressing it, whether that’s a thickened ligament, scar tissue, or a tight muscular passage.
A 2024 meta-analysis pooling 19 studies and 810 patients found that about two-thirds of patients experienced significant pain relief after surgery. Success rates varied substantially depending on the surgical approach. Laparoscopic (minimally invasive) decompression had the highest reported success rate at roughly 91%, though it carried a complication rate of about 16%. The perineal approach (through the space between the genitals and anus) showed around 69% success, while the transgluteal approach (through the buttock) came in at about 50%. Patient age and how long the follow-up period lasted both influenced outcomes.
These numbers come with important caveats. The studies varied widely in how they measured success, and the overall evidence quality remains moderate. Surgery is not a guaranteed fix, and recovery can take months as the nerve heals. Still, for people who have exhausted other options, decompression offers a meaningful chance at improvement.
Conditions That Overlap With Pudendal Neuralgia
One of the most frustrating aspects of pudendal neuralgia is how long it can take to get the right diagnosis. The average patient sees multiple specialists before the condition is identified. Bladder symptoms may lead to a diagnosis of interstitial cystitis. Genital pain may be labeled vulvodynia or chronic prostatitis. Rectal pain may be attributed to a colorectal issue. Each of these conditions is real and can coexist with pudendal neuralgia, but treating them without addressing the nerve itself leaves the core problem unresolved.
The sitting-dependent pain pattern is the clearest distinguishing feature. If your pelvic pain reliably worsens with sitting and improves when you stand, lie down, or sit on a toilet seat, the pudendal nerve should be on the list of suspects. Bringing this pattern to your clinician’s attention can help steer the evaluation in the right direction.