Pudendal Neuralgia/ Neuropathy (PN)
Pudendal nerve is one of the main nerves of the pelvis, with one nerve on each side. It runs from the lower back, along the pelvic floor to supply the genitals, lower part of rectum, and perineum (area between the sit bones). This nerve is closely involved with urinary and bowel functions.

Pudendal neuralgia is a condition related to irritation or damage of pudendal nerve, which presents as pain or altered sensation in the genital, rectal region or deep inside the pelvis. It is more common in women and is also addressed as cyclist syndrome, Alcock’s canal syndrome and pudendal nerve entrapment. Despite the significant advances in the evaluation and management of chronic pelvic pain, it often goes unrecognised. It can be associated with other conditions such as Chronic Pelvic Pain Syndrome, dysfunctional voiding, painful bladder syndrome, chronic prostatitis etc.

Pudendal Neuralgia - Patient Information Leaflet

Signs and symptoms of Pudendal Neuralgia
Burning, shooting, electric shock like, crushing, aching, prickling or itching sensation in the areas of pelvis supplied by the pudendal nerve.
Pain worse on sitting or exercising and resolves when lying flat (as during the night) or standing
Better when sitting on the toilet seat
Intermittent initially but can change to a constant pain with time It can radiate (travel) to buttocks (around ischial spines) and legs (inner thigh), feet
Other symptom which may be present include
Urge to go to the toilet often (urinary frequency) or a feeling of a bladder infection,
Pain on passing urine
Increased sensitivity in pelvic area
Numbness, pins and needles sensation in pelvis
Pain during sex or sexual arousal or orgasm/ ejaculation. It sometimes presents as persistent sexual arousal
Foreign body/fullness sensation in rectum, vagina or perineum (like a tennis ball)
Rectal pain with an urgent need to open the bowels
Causes of Pudendal Neuralgia (PN)
Compression or entrapment of pudendal nerve (cycling, prolonged sitting, pelvic floor muscle spasm, any growth pressing on the nerve)
Stretching of the nerve as during childbirth or surgery
Direct Injury to pudendal nerve as during pelvic trauma, falls on the buttock or even with severe constipation
Compression at the level of spinal cord or nerve roots
Biochemical injury from infections and diseases (diabetes, multiple sclerosis, viral infection- herpes zoster, HIV)
PN Management
Management of this condition requires active patient participation and use of a combination of lifestyle changes, medical interventions. Treatment includes

Lifestyle changes are aimed at reducing the irritation of the nerve. These include avoiding activities which increase pain such as cycling, prolonged sitting, constipation etc, using a special cushion while sitting.
Neuropathic pain killers- these can help in reducing the pain
Injections such as pudendal nerve block, pelvic flood muscle or tender point injections Often a series of injections are performed for maximal benefit.

Pudendal Nerve Block:
The injection is performed for treatment of pelvic and genital pain. Resolution of pain a diagnostic nerve block, even if temporary, supports the diagnosis of pudendal neuralgia. These blocks also serve an important therapeutic role. As discussed previously the compression of nerve can occur anywhere along the path and hence sometimes a series of injections may be required. These blocks are performed as a day care procedure under local anaesthesia. Using image guidance (ultrasound, fluoroscopy or CT guidance) helps to improve safety and chances of success. If required your doctor may recommend pulsed radio frequency treatment of pudendal nerve for a more sustained response in future.

Pulsed radio-frequency treatment of the pudendal nerve, sacral nerve roots
Supervised Physiotherapy aimed at the pelvic floor muscles. This can help with muscle spasms, imbalances and in correcting other dysfunctions
Psychological support including cognitive behavior therapy, meditation, mindfulness, self management and relaxation exercises

Author's Bio: 

Dr. Amod Manocha is a Senior Consultant and Head of Pain Management Services at Max Multispecialty Hospital, Saket. He is trained as a Pain Management Specialist and an Anaesthetist in the UK. He has over 13 years of work experience in the UK including working as a Chronic Pain Consultant in many UK hospitals.
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