Behavioral health conditions affect a substantial number of people in the U.S. and are especially common among people with low incomes. Behavioral health conditions include mental illnesses, such as anxiety disorders, major depression, bipolar disorder, schizophrenia, and post-traumatic stress disorder, as well as substance use disorders (SUD), such as opioid addiction. These conditions range in severity, with some being more disabling than others. People with behavioral health needs may require a range of services, from outpatient counseling or prescription drugs to inpatient treatment.