Interstitial cystitis/bladder pain syndrome as referred pain from injured T12/L1 nerves: symptomatic improvement with resection of ilioinguinal and iliohypogastric nerves.

To evaluate the specific contribution of ilioinguinal (II) and iliohypogastric (IH) nerve injury and referred pain to interstitial cystitis/bladder pain syndrome (IC/BPS) and patient-reported chronic pelvic pain (CPP), and to enumerate the effects of II and IH nerve resection on the pain and voiding symptoms in patients with IC/BPS.