Stress Reactivity as a Determinant in Co-occurring Alcohol Use and Anxiety Disorder: Diagnosis and Alcohol Use Outcomes

Inclusion Criteria: * Ability to provide informed consent * Between the ages of 18 and 65 * Diagnostic and Statistical Manual diagnosis of a Panic Disorder, Generalized Anxiety Disorder, or Social Anxiety Disorder within the past 30 days (AUD+AnxD group only). * Primary alcohol use disorder diagnosis and alcohol use in the 30 days preceding the study (AUD alone and AUD+AnxD groups only). * Inpatient treatment at Lodging Plus primarily for alcohol (vs. other drug with nicotine accepted) dependence (AUD alone and AUD+AnxD groups only). * A minimum of a sixth-grade reading level. * Healthy controls, same criteria absent AUD and AnxD diagnosis of an alcohol and/or anxiety disorder * Lives within proximity to the Twin Cities (e.g., within about an hour's drive) or willing to drive to Fairview for the purpose of attending follow-up visits * Willingness to provide contact information to confirm follow-up appointments Exclusion Criteria: * Lifetime history of psychosis or mania * Cognitive impairment, physical impairment, or chronic medical illness that precludes study participation * Primary PTSD as determined by qualifying assessment * Females currently pregnant * Exposure to antipsychotic medication for a total duration \>16 weeks. * Prior head injury leading to \>30 minutes of unconsciousness. * Cognitive impairment that impedes study participation. * Healthy controls with a history of any major medical or psychiatric disorders (e.g., schizophrenia, depression, heart disease, or stroke). * Suicide intent or attempt in the past 30 days * Cardiovascular health issues * Thyroid Disease * History of severe neurological illness such as chronic seizure disorder (e.g, epilepsy) or stroke * Brain tumor and/or implants in the skull cavity (e.g., plate in the skull) * Pacemaker