Bladder Pain Syndrome After Botulinum Toxin Injection and Nerve Stimulation Have Not Achieved Adequate Relief

Clinical scenario

Persistent or recurrent pain perceived in the urinary bladder region, with at least one accompanying symptom — such as pain worsening with bladder filling or increased daytime and/or night-time urinary frequency. No proven infection or other obvious local pathology. Pain duration of at least 3 months.

Why this protocol applies — prior treatment has not met its targets

This protocol is indicated when submucosal bladder wall and trigonal injection of botulinum toxin type A plus hydrodistension — or alternatively sacral nerve stimulation or pudendal nerve stimulation — has not achieved adequate reduction in urinary bladder pain severity or improvement in functional bladder capacity at 3 months.

Next-step approach

After failure of the above therapies, the evidence-based pathway involves a specific surgical intervention targeting bladder lesions — applicable only in a defined histological subtype — and, for refractory cases, a further last-resort surgical option requiring multidisciplinary assessment. The complete eligibility criteria, surgical pathway, and specialist referral guidance are in the full protocol.

Instant Access to Structured Evidence-Based Regimens

References

Primary bladder pain syndrome is the occurrence of persistent or recurrent pain perceived in the urinary bladder region, accompanied by at least one other symptom, such as pain worsening with bladder filling and daytime and/or night-time urinary frequency.

There is no proven infection or other obvious local pathology.

Offer transurethral resection (or coagulation or laser) of bladder lesions, but in PBPS type 3C only.

Only undertake ablative and/or reconstructive surgery as the last resort and only by experienced and PBPS-knowledgeable surgeons, following a multidisciplinary assessment including pain management.

Since the 1970s, resection and fulguration have been reported to achieve symptom relief, often for more than three years.

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