Study of Urgent PC Versus Sham Effectiveness in Treatment of Overactive Bladder Symptoms

Inclusion Criteria: * Women and men \>18 years of age * A score of \> 4 on the OAB-q short form for urgency (question 1) * Average urinary frequency \> 10 times in one 24 hour day based on a 3-day voiding diary * Self-reported bladder symptoms present \> 3 months * Self-reported failed conservative care (i.e., dietary restriction, fluid restriction, bladder training, behavioral modification, pelvic muscle training, biofeedback, etc.) * Off all antimuscarinics for at least 2 weeks prior to enrollment * Capable of giving informed consent * Ambulatory and able to use a toilet independently, without difficulty * Capable and willing to follow all study-related procedures Exclusion Criteria: * Pregnant as confirmed by urine pregnancy test, or plans to become pregnant during the study period * Neurogenic bladder * Botox use in bladder or pelvic floor muscles in the past year * Pacemakers or implantable defibrillators * Primary complaint of stress urinary incontinence * Current urinary tract infection (UTI) * Current vaginal infection * Current use of InterStim * Current use of Bion * Current use of TENS in the pelvic region, back or legs * Previously been treated with PTNS * Use of investigational drug/device therapy within the past 4 weeks * Participating or have participated within the past 4 weeks in any clinical investigation involving or impacting gynecologic, urinary or renal function * Deemed unsuitable for enrollment in study by the investigators based on subjects' history or physical examination (including bleeding disorders or anticoagulant medications, and peripheral neuropathy) * Subjects with nerve damage that would impact either percutaneous tibial nerve or pelvic floor function