Research Highlight: Investigating Unintentional Injury as a Risk Factor for Self-Harm Each year, adolescents go to emergency departments for both unintentional injury and deliberate self-harm. However, determining whether an adolescent’s accidental injury had suicidal or self-harm intent has long been recognized as a challenge. A better understanding of the association between unintentional injury and deliberate self-harm could inform and aid prevention and intervention efforts. Past studies have found associations between having any nonfatal unintentional injury and risk of later self-harm. In a recent NIH-supported study, researchers investigated whether distinct subtypes of unintentional injury—or how the injury happened—have stronger associations with risk of future self-harm than others in adolescents. Identifying which adolescents with unintentional injury might be at elevated risk for future deliberate self-harm could help with targeting clinical assessment and intervention in emergency department settings.