Study of Non-invasive Acupuncture-like Transcutaneous Electrical Nerve Stimulation (Altens) to Help Alleviate Xerostomia After Radiation Therapy for Cancers of the Head and Neck

Inclusion Criteria: * Age \> 18 years * No restrictions on gender or ethnicity * Ability and willingness to present for ALTENS therapy over 12 weeks * Previous radiation to the head and neck with a dose \> 50 Gy * Subjective complaint of dry mouth * No evidence of active malignancy in the head and neck region * Minimum of 3 months post initial curative therapy with no evidence of active disease by standard of care surveillance scans for said disease site Exclusion Criteria: * Age under 18 years of age * Inability to present for ALTENS therapy * Inability to fill out quality of life questionnaires * Ability and desire to receive concurrent chemoradiation therapy * Because ALTENs may stimulate nerves similar to those of pilocarpine, the following exclusions are noted as theoretically ALTENS could produce worse symptoms * Unstable Angina * Unstable cardiac disease with hospitalization in the last 6 months * Presence of a pacemaker, ICD, or other electronic implanted device that could be affected * Myocardial infarction in the last 6 months * Symptomatic arrhythmia in the last 6 months * Severe COPD with exacerbation causing hospitalization within the last 6 months * Pregnancy or the possibility of pregnancy