The objective of this study is to investigate the feasibility of cervical TEN stimulation (TENS) delivered to the back of the neck to decrease anxiety and sleep issues in young adults with Autism Spectrum Disorder (ASD). The specific aim is to determine the effect of TENS, delivered over 3 daily sessions, on anxiety and sleep quality in young adults with ASD, as compared to sham and baseline. The investigator will enroll up to 10 young adults, aged 10 to 25 years of age with confirmed ASD and measureable anxiety and sleep disturbance symptoms, and participation will last 3 weeks.
Inclusion Criteria: * Between the age of 10 - 25 years old * IQ \> 80, to be evaluated during the screening visit using the Kaufman Brief Intelligence Test (KBIT) * Self-reported complaints about anxiety and/or sleep issues * Screen for Child Anxiety Related Disorders (SCARED) - Parent Form, score \>= 25 * Able to follow directions in English Exclusion Criteria: * • IQ ≤ 80, to be evaluated during the screening visit using the KBIT * SCARED - Parent Form, Score \< 25 * Has a medical implant (such as a pacemaker, cochlear implant, brain stimulation device, spinal stimulator) * History of significant face/head injury including cranial or facial metal plate or screw implants * Pregnant * History of migraines or frequent headaches (more than once a week) * Started taking anti-anxiety medications less than 3 months prior to study participation or has not been taking anti-anxiety medications consistently for at least 3 months prior to study participation * Fainting (vaso-vagal syncope or neurocardiogenic syncope) * Diagnosis of Raynaud's disease * Tempromandibular joint (TMJ) disorder or other facial neuropathy * Poor vision or hearing that is uncorrectable * Seizures in the last 2 years * Evidence of skin disease or skin abnormalities affecting the neck or upper back * Upper extremity contractures