Experiencing homelessness is traumatizing and can exacerbate mental illnesses and substance use disorders. When persons experiencing homelessness are a danger to themselves or others, petitioning for involuntary placement is clinically, ethically, and legally indicated. The process of involuntary commitment is often traumatic and can fracture already fragile relationships that persons experiencing homeless have; involuntary commitment should be used only when necessary. It is society's obligation to prevent crises but, when needed, to support persons in crisis by responding with care to their health needs.The American Medical Association designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 Credit™ available through the AMA Ed Hub TM . Physicians should claim only the credit commensurate with the extent of their participation in the activity.
Mental Illness and HomelessnessThere are complex, multidirectional relationships among homelessness, mental illness, substance use disorder (SUD), and trauma. Serious mental illness (SMI) and SUD can compromise patients' insight, perception, cognition, and behavior in ways that make it difficult for them to maintain housing, employment, and relationships. Both financial and behavioral implications of SUD can lead to homelessness, 1 and those who experience the trauma of homelessness often use alcohol or drugs to self-medicate. 2 One study showed that up to 68% of persons experiencing homelessness in childhood reported 4 or more adverse childhood events. 3 Chronic injuries from physical trauma, such as traumatic brain injury, can generate cognitive and behavioral deficits, which also contribute to homelessness. 4 Lack of affordable housing, loss of public support, SMI, SUD, or trauma history increase the likelihood that a person will experience homelessness. 1 Deinstitutionalization during the US civil rights era also contributed to an epidemic of homelessness among persons with SMI, 5 whose health is compromised by lack of community housing and rehabilitation policy and overreliance on incarceration for housing. 5 Upstream, not downstream, resources need to be integrated into the health care system to address health, food, and shelter needs of persons experiencing homelessness.