Peripheral Transcutaneous Neuromodulation of the Post-tibial Nerve for Solifenacin 10 mg. Hyperactive Bladder Syndrome

Inclusion Criteria: * Women\> 18 years, diagnosed with hyperactive bladder syndrome for at least 6 months of evolution and who have taken Beta 3 agonists Exclusion Criteria: * Patients who can contribute biased information: have previously consumed and abandoned anticholinergic drugs due to lack of efficacy or side effects; Suffering from hyperactive bladder of neurogenic origin (multiple sclerosis, Parkinson's, spinal cord injury); Present cystocele or any pelvic organ prolapse\> 2 according to Pelvic Organ Prolapse-Q classification * Patients who may become worse with the interventions envisaged in the study: being a implantable automatic defibrillators; With cutaneous alterations in lower extremities that prevent the placement of electrodes on the surface; Women who are pregnant or who may be pregnant during the duration of the clinical trial (prior and at each evaluation visit urine Bhcg will be requested to rule out pregnancy) or patients who are not able to manage transcutaneous electrical neurostimulation on an outpatient basis ) Or patients in whom Solifenacin is contraindicated: urinary retention, severe gastrointestinal disorders (including toxic megacolon), myasthenia gravis, or narrow-angle glaucoma, and in patients at risk of these conditions as hypersensitive at first Active or to any of the excipients, undergoing hemodialysis, with moderate hepatic insufficiency or severe renal insufficiency or in simultaneous treatment with a potent inhibitor of CYP3A4, eg ketoconazole.