Efficacy of Transcutaneous Nerve Stimulation on Improvement of Overactive Bladder Symptoms

Inclusion Criteria: * male and female patients * age above 18 * OAB symptoms more than 6 months before run into the study * OAB symptoms refractory to medical oral and cognitive treatments * Adverse events or unwillingness to continue with abovementioned treatments * patients with OAB symptoms with no evidence of neuropathic nature * patients who signed informed consent fully understanding the treatment and study design Exclusion Criteria: * children * patients who unable or did not sign an informed consent or do not understand the study design and the treatment * patients who have implanted electric devices (eg. cardiac stimulators etc.) * patients who have post voiding residual more than 100ml * patients who have neuropathic OAB or pelvic ongoing malignancy or prior pelvic radiation * patients who were treated in the last 6 months with SNM, PTNS or intravesical Botox injections * patients with denovo OAB after recent implantation of tension-free vaginal tape (TVT) procedure * stress urinary incontinence predominant complaints in mixed incontinence patients * significant pelvic organ prolapse in women or an evidence of significant bladder outlet obstruction in male patients * patients with a history of recurrent urinary tract infections (UTIs) during the last 2 years * any medical condition that involves skin on the lower extremity * bilateral leg amputation * any medical condition that on investigator's mind could have an adverse impact on the patient during the study * participation in a clinical study at the last 6 months