Characteristics of self-harm on an adolescent psychiatric inpatient unit based on neurodevelopmental diagnoses.

Introduction: Engagement in self-harm is common among youth in psychiatric inpatient units, however the nature of self-harm may be different in psychiatric care due to the increased supervision and theoretically decreased access to typical means of self-harm. This study aims to describe daily reports of self-harm experienced during psychiatric inpatient stays among adolescents and compare these inpatient self-harm experiences based on neurodevelopmental diagnoses (NDDs, including autism) given that self-harm methods differ across NDD diagnostic groups outside of the inpatient unit. Methods: Data were derived from a larger study of risk factors among a sample of 119 suicidal adolescent inpatients, recruited from a large, urban adolescent inpatient psychiatric unit. Participants answered a daily series of self-report questions, including items about self-harm engagement, frequency, and methods used since the last survey. Results: There was no difference in the number of participants who reported any engagement in self-harm based on diagnostic group (χ Conclusions: Findings revealed that in an inpatient unit where patients are presenting for self-harm risk, there are no significant differences in engagement, frequency, or methods used for self-harm based on autism and NDD status. These analyses provide valuable clinical information regarding a lack of differences in self-harm by these diagnostic subgroups. Future research should seek to further explore functional purposes of self-harm on inpatient unit and how this differs by diagnoses.