This document defines elder abuse and neglect, describes the various types (physical, psychological, sexual, etc.), risk factors, theories of causation, barriers to detection and treatment, and recommendations. Elder abuse is mistreatment of older adults and can include acts of commission or omission. Self-neglect is the most common form and difficult to detect. Abuse can be perpetrated by caregivers, family members, or strangers and affects over 1.8 million older Americans annually.