Microcurrent Device (TIVIC Health)

Inclusion Criteria: * Scheduled for FESS functional nasal or endoscopic sinus surgery * Possessing an American Society of Anesthesiologists physical status classification of I or II * Age ≥ 18 * Possess the capacity to give informed consent * Able to read, write and understand English or Spanish * Able to attend follow up visits at postop days 7 and 14 Visit 1 (within 0 - day 14) and post-op Visit 2 (within 10 - 21 days) * Postop pain VAS ≥ 5 in PACU phase II Exclusion Criteria: * Age \< 18 * Does not understand English or Spanish * Does not meet inclusion criteria * History of chronic pain * Experiencing chronic pain requiring opioids at baseline and/or who are under the care of pain management specialists * Neurologic disorders (including seizure disorders) * Undergoing planned or unplanned additional procedures at the time of FESS surgery * In custody of the state * Prisoners * Known to be pregnant * Implanted cranial metallic components or devices including deep brain stimulators or cochlear implants * Has an implanted or external worn cardiac device including pacemakers, automated implantable cardioverter defibrillator (AICD), or any other cardiac electric devices (including non-implanted devices, e.g. defibrillator vest)